Busy

It’s a sad day. I’ve become one of those people who makes excuses for not blogging.

I have got some good reasons though. These are:

1) I’ve been getting some papers into journals.

A version of my PHD intro chapter has been accepted by European Urban and Regional Studies.

And my paper with Neil Lee on cultural diversity and business performance has been accepted by Economic Geography.

I’m pretty happy about both of these. Fingers crossed for a third which is still out for review.

2) I’m finishing up a couple of other projects.

One is a paper on proximities and collaboration, with Riccardo Crescenzi and Andrés Rodríguez-Pose. We’re interested in how physical, institutional, social and other ‘closenesses’ might shape how people work together (or not). You can see an early version of this here [pdf], from a  presentation I gave in Leuven the other week.

The other is some research on Tech City, which I’m doing for the Centre for London. This is joint work with Emma Vandore and Rob Whitehead at CFL. We’ve been talking to a lot of East London tech firms, and crunching microdata to trace the cluster’s long term growth and dynamics.

You can hear some early thoughts on the Future Human podcast – look for the ‘Liquid City’ episode. The report itself will launch on 2 July at Hackney House.

On which note, back to writing …

London’s economics of diversity

I gave a talk on my diversity and firms research at LSE London on Monday. You can now read summaries on LSE’s British Policy and Politics blog and the SERC blog.

LSE London have also posted up the slides and a podcast. I hope they’ve included the bit at the beginning where Powerpoint stops working …

The paper’s been picking up some interest – thanks to The Economist’s Free Exchange blog – and you can read the whole thing here if you so wish.

Future chat

I’m giving a couple of seminars in the next few weeks.

First up, on 5th March, I’m at LSE London talking about cultural diversity and the London economy. This will draw on some of my PHD research on the economics of diversity. It turns out diversity and co-ethnic networks are good for London businesses; the broader effects of immigration on labour markets more mixed. I’ll talk about these results and the policy lessons. Details here.

Next, on 7 March I’ll be giving a talk on Tech City at UCL’s Bartlett School of Planning. I’ll be discussing emerging findings from a project on the East London technology cluster, which I’m leading at the Centre for London. Only a few people are looking at this stuff, so I’m excited to be working on it. I’ll be looking at international experience, what the numbers tell us, and feeding back some of our conversations with local firms. Details here.

If you’re around, come and say hello!

Tech City at City Hall

I gave evidence to the London Assembly Economy, Culture and Sport Committee  on Tech City yesterday.  On the panel with me were Eric van der Kleij (Tech City UK), Kulveer Ranger from the Mayor’s Office, Theo Bertram (Google), Georg Ell (Yammer) and Jeff Lynn (Seedrs).

You can see the 90s-style ‘webcast’ here. There’s some entertaining political gunfighting between Kulveer Ranger and some of the Labour members for the first 20 minutes, and then a good hour of discussion after that.

Happy viewing!

Dr. Nathan, actually.

I’ve now formally been awarded my PhD.

As some of you will know, it looks at the economic effects of growing cultural diversity in the UK, with a particular focus on recent experience in British cities, and on links between migrant and minority communities, diversity and innovation.

LSE has put the whole 234 pages online here. If that’s too much for you, here’s a summary chapter which covers the basic what, why and how.

SERC has also published versions of all four chapters in its Discussion Paper series. These are:

1) The economics of super-diversity

2) The long term impacts of immigration on UK cities

3) Ethnic inventors, diversity and innovation

4) Does cultural diversity help firms to innovate?

Happy reading!

Planning reform

The past few months have seen furious public debate about planning reform in England. Here [pdf] and here [pdf] are two new papers on the economics of planning, written by me and SERC Director Henry Overman. Versions were also submitted to the National Planning Policy Framework (NPPF) consultation last month.

The papers pull together SERC research on planning, alongside wider evidence (paper 1) and assess the Government’s proposals for planning reform (paper 2). Henry and I don’t agree on all of this – I’m certainly more pro-brownfield than he is – but we both felt that important pieces were missing from the recent public conversation.

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The key messages are:

1) The job of planning is to balance environmental, social and economic welfare. This means tradeoffs, so all planning systems have costs and benefits.

2) Planning’s economic effects, especially the costs of the status quo, have been underplayed in recent debates. We summarise evidence strongly showing current rules increase house prices and volatility, increase office rents, probably lower retail productivity and lower employment in small independent shops.

3) Paradoxically, land restrictions in the most popular areas have led to some truly unsustainable development – such as selling off school playing fields for housing. Similarly, brownfield-first policies have delivered some positive benefits for cities like Manchester, but aren’t a panacea.

4) The draft NPPF needs to be much clearer about sustainable development, potential tradeoffs and how practical decisions might be made (for example, using the National Ecosystem Assessment).

5) We agree with the National Trust and others that there’s a basic tension between Government’s desire for localism and some important national objectives. Ministers need to be clearer about what trumps what, or (more in keeping with localism) provide stronger incentives to align interests.

6) The presumption in favour of sustainable development that is consistent with the plan should be retained. But local authorities need time to adjust to the new rules, and the Government should introduce the change gradually.

7) Current incentives to ramp up housebuilding, such as the New Homes Bonus, are probably too weak and need to be strengthened. And one-size land restriction policies (such as town centre and brownfield first) don’t work well in practice. Rather, we suggest Whitehall sets the appropriate framework to try to encourage particular patterns of development but then allows local authorities to develop their own land use restriction policies.

Liquid City

A quick debrief from last night’s Liquid City debate, ably put together by Future Human. I was on the panel, alongside Eric van der Kleij from Tech City UK and Andrew Carter of Centre for Cities.  It was a really helpful session for me, with a super-engaged audience full of good ideas and sharp questions.

Unvarnished notes follow.

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Strategy

‘Tech City’ is nice shorthand for London’s rapidly-growing tech scene, especially its nexus around Old St. What can policymakers do to help it along, if anything?

Eric set out his four main tasks:

1 / Stop Government messing things up

2 / Help big firms to come

3 / Help small firms to grow, e.g. through access to finance

4 / Promote ‘talent’.

Still quite vague, but the focus on micropolicies is wise. International evidence gives no clear steer on what Government’s role, and standard cluster policies have a very patchy record.  Rather than just ‘building Silicon Valley in the UK’, strategy needs a distinctive London flavour.

The Olympic Park

It’s still not clear to me how the Olympic Park fits in – except as a big space nearby that will need filling post-Games. Officials hope that tech firms priced out of Silicon Roundabout might come to the Park. This feels optimistic , and  rather goes against the intention not to masterplan the cluster.

More promising is the idea that the Park can morph into a campus for big firms like Cisco. Siemens have announced something similar in the nearby Royal Docks.

Big firms, small firms

What might global firms like Google and Facebook might do for, or to, Shoreditch? Eric was clear that big firms should be ‘good neighbours’, citing Google’s upcoming hub and Cisco offer of free telepresence as examples. Ministers are ‘encouraging’ them to set up R&D  facilities here, but of course can make no promises. Someone suggested using Section 106 agreements to leverage, say, incubators, as a condition of setting up shop here – an idea worth looking at.

The room was divided about the competitive threat posed by big arrivals. A few people worried about small firms being ‘eaten’ by bigger ones. But for most companies in the Bay Area, being bought by Facebook is a dream outcome.  More important is that the local ecosystem keeps producing new firms and new ideas. Which brings me to …

Gentrification

As Silicon Roundabout gets more popular, it will get pricier, and some firms will get pushed out. This is part of the  neighbourhood change cycle. For small companies it’s of course disruptive, though London is big enough to allow new hot neighbourhoods to form. Policy can help by providing some cheap space, and avoiding any needless property shakeups. The area’s ‘soft infrastructure’ – cafes, bars and public spaces – also helps people get their creative work done. Keeping the feel is as important as keeping physical space available.

Failure

The UK needs to change its attitude to business failure, and develop a more positive view of serial entrepreneurship. This is partly a legal issue – bankruptcy rules in California are more relaxed than here. It’s partly attitudinal – US VCs actively look for entrepreneurs who’ve tried out a few ideas and learnt from their mistakes.

More broadly, we need to remember that Tech City is a long game. A lot of the innovation hotspots mentioned – in the US, Finland and Israel, for example – took decades to mature.

Human capital

We can accelerate innovation by helping smart people cluster together. But current immigration policy will hurt London’s ability to keep international talent. The Entrepreneur Visa, which requires £50k of backup funding per application, isn’t terribly helpful. Equally, London needs to get better at growing its own skilled people – improving education and training systems, and opening up routes into the industry are both forward priorities.

London’s cultural diversity is a big plus. My research (here and here) suggests that diversity helps push up innovation.  However, Silicon Valley’s heavy dependence on international migrants is a cautionary tale – diversity has done a lot for the Valley, but firms are often at the mercy of DC immigration politics.

The economics of skyscrapers

Why do firms pay more for space in skyscrapers? I’ve posted some answers on LSE’s Spatial Economics Research Centre blog. Drawing on new research by the SERC community, I look at the balance between agglomeration effects (people working in tall buildings are more productive) and reputation effects (managers like prestigious addresses).

The research findings suggest both effects are in play – particularly for very tall buildings like The Shard. That has important implications for planning the skyscape of London and other UK cities.

Now read on …

What’s the point of Outer London?

I left today’s LSE/Demos Outer London seminar scratching my head. What is ‘Outer London’ for? It doesn’t make much sense – except as a voting bloc. Given we’re less than a year from Mayoral elections, though, perhaps that’s the point.

Here are some brief thoughts from the day. (Disclosure: I’m affiliated with Demos’ new Centre for London, but these views are my own.)

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There are different ways of thinking about cities. Planners focus on systems and zones. Economists think about markets, and clusters of people and firms. Sociologists look at communities, neighbourhoods and relationships. In practice, we need all of these lenses to understand real world places.

London has many distinctive features. For now let’s pick two. First, it’s a ‘city of villages’ – over time, the capital has emerged from dozens of small centres merging in a single urban mass. Second, it’s a mega-city-region. London’s economic system spills over political boundaries and across much of Southern England.

Given this, drawing lines around bits of London is a bit of an arbitrary exercise. Using official definitions of ‘Inner’ and ‘Outer’ London to make policy is actively unhelpful. 

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This became very clear during the morning. Demos’ Paul Hildreth took a classic systems approach, tracing links between Outer London and the rest. But his slides demonstrated just how hard this is to do. Data on people flows, industry mix, residence types and productivity all show how interconnected the London system is. 60% of Londoners live in the outer Boroughs, but most don’t stay there: commutes within Outer London make up less than a third of total journeys. 

Alan Mace from LSE London took a communities angle, presenting some very rich data on three outer boroughs. These showed some classic suburban features – stable populations and a strong sense of belonging. But it’s not clear these neighbourhoods are distinctively different from inner suburbs like parts of Hackney or Islington – or that similar to other outer communities. In the Q&A, it became obvious how heterogenous ‘Outer London’ neighbourhoods actually are.

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 As Scottish law would say, Outer London is ‘not proven’ – either as an economic space or a state of mind. But it does work in political terms.

Boris won the 2008 Mayoral election largely on the basis of outer boroughs’ votes. Ken, learning from past mistakes, began his 2012 comeback bid in Croydon. No surprise that Boris is re-launching the Outer London Commission less than a year before the vote, with £10m to spend on Outer London town centres before May (and £40m after).

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What does this mean for policy? The political imperative means Outer London features heavily in the new London Plan, which launches on 11 July. Economic and social realities mean there are tensions in the Plan’s overall strategy, and in the gap between policymaking and impact on the ground.

On strategy, the Plan has a welcome focus on thinking across ‘mega-London’, and identifies high-growth development hotspots across the capital. But it then goes on to set out a number of Outer London-specific policies on the economy, transport and quality of life.

On impacts, OLC chair Will McKee rightly said at the seminar that planners can’t turn market forces around, and need to work opportunistically within the business cycle. So given the deep trends taking retail off high streets and onto the internet, what can the OLC’s £50m town centre fund actually do? It is unlikely to have more than a marginal effect on retail employment. Better, as Mary Portas suggests, to take a hard look at how shopping behaviour is changing – then intervene where sensible to help high streets adapt. 

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Outer London is driven by electoral realities, more than economic or social truths. Let’s hope the next Mayor, whoever they are, recognises which of these is the best basis for policy in the capital.

Megacities: the real story

We finally watched Andrew Marr’s Megacities last night. It’s a great piece of spectacular urbanism – endless cityscapes, vast crowds, skyscrapers, huge numbers, expansive metaphors. But it’s also quite badly wrong about what our urban future is going to look like. Let me explain.

The series has two basic premises. One, the world’s population is now majority urban. Two, we’ll be living in megacities – places with 10m people or more.

The first of these is very likely true. For urbanists it’s not an especially new fact, first appearing in this 2003 UN-Habitat report.

The second is part true at best. Megacities are telegenic, but most of the world’s population won’t be living in them. 

Sure, the number of megacities is rising – from two in 1950, three in 1975 to 19 in 2007. By 2025, the UN predicts  there’ll be 27. But the number of ‘large cities’ – five to 10m people – is already bigger, and growing faster. In 2007 there were 30: the UN suggests there’ll be at least 48 by 2025. More importantly, half the world’s urban population live in much smaller cities, of around 500,000 people. These may be the most common of all.

In fifteen years’ time, then, we’ll see far more Liverpools (around 400,000 people) and Londons (8m people) than Tokyos (26m people).

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Paradoxically, the biggest urban settlements are now hard to recognise as cities at all. Across the world cities are merging into mega-regions: notably China’s Pearl River Delta, the US Eastern seaboard, even the Greater South East.

Some of the numbers here are difficult to take in. An estimated 120m people live in the Pearl River Delta, the largest urban zone on the planet – China is now planning to merge nine cities in the Delta to create a single sprawl of 42m people. The Tokyo-Nagoya-Osaka-Kyoto-Kobe region may comprise 60m people by 2015, almost the entire population of the UK.

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All this may suggest that urbanisation is accelerating. In fact the opposite is true. Globally, cities grew fastest in the 1950s and early 60s: growth rates have been slowing ever since, from 4.1 percent to 2.5 percent today, and a predicted 1.8 percent by 2030. Developing countries are also on the same downward trend.  

Urbanisation runs in parallel with economic development, and so as developing countries industrialise, their urban systems tend towards steady state. Of course there is a lot of city by city variation. For example, the UN predicts Dhaka will keep growing – from 15.9m in 2007 to 22.8m in 2025. But Lagos, which has grown from less than half a million people in 1950 to over 13m in 2007, is predicted to reach just 16m in the next fifteen years.    

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Megacities makes much of the growth of urban slums. Again, the picture is complex. Over the past decade the share of urban slum dwellers has fallen from 39 to 32 percent, due to economic growth and policy interventions. But as people are flowing into cities faster than infrastructure can keep up, the absolute number of people in informal settlements is growing, and will keep growing.  

Marr stays the night in a Dhaka slum, discovering it’s quite like any other suburban neighbourhood – dirt streets and tin shacks aside. Marr echoes Stewart Brand, celebrating slum dwellers’ entrepreneurialism and inventiveness. Ed Glaeser describes slum neighbourhoods as ‘private energy, public failure’: the development challenges of poor public health, chaotic infrastructure and urbanised poverty remain considerable.

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Finally, we need to factor in the geography of climate change. Many megacities are coastal, and will be threatened by rising sea levels. Many will also be increasingly water-stressed in the years to come.

In his excellent book The New North, Laurence Smith explores the economic rise of the NORCS – cooler, resource-rich regions stretching across Canada, Scandinavia and parts of the US, Russia and China. He predicts new ‘hydrocarbon cities’ appearing across Canada and Russia, and new mega-regions like Cascadia – spanning Portland, Seattle, Vancouver and parts of NorCal.

Megacities are a great symbol of the global urban shift. But our urban future is going to be much richer and more complex than this.