 The largest number have occurred in London from the 1980s onwards, although projects exist in most cities across the UK, linked in a network.Squatted social centres tend to be quickly evicted and therefore some projects deliberately choose a short-term existence, such as A-Spire in Leeds or the Okasional Café in Manchester.Longer term social centres include the 1 in 12 Club in Bradford, the Cowley Club in Brighton and the Sumac Centre in Nottingham, which are co-operatively owned.