Keeping your tyres pumped up to the recommended tyre pressure is a great way to prevent punctures. However, it’s often hard to reach the required pressure if you are using only a hand pump.
Fortunately, Cyclehoop have been working on installing a limited number of public bike pumps in London. The below map shows you where you can find your nearest one:
View Public Bike Pumps in a larger map
It is hopeful that the scheme will expand with support from local councils. Another interesting scheme is the one run in Suffolk where local pubs are being asked to store puncture repair kits.