The D of E do publish figures by borough Table 9a www.education.gov.uk/rsgateway/DB/SFR/s001012/index.shtml
The above figures I posted for Richmond came from that table and corresponding figure for London and the boroughs bordering Richmond are as follows
Year of entry 2011, 2012,2013,2014
London 79110,78770,79490,83715
Inner 27760,27790,28310,29925
Outer 51350,50975,51180, 53790
Wandsworth 2035, 2085, 2160, 2255
Kingston 1465, 1480, 1455, 1540
Hounslow 2310,2330, 2365, 2445
All the factors I listed in my last post will impact on these figures in terms of who actually applies to schools in your area. These figures were compiled in 2010 so some of the factors I listed will have had an impact over the last two years as well in determining decisions parents make this year.
Apart from Richmond and Kingston the increase in pupil numbers is steady across London. There is a slight dip in both boroughs but I would be very careful about assuming things are going to be easier there, it will only take a few people to decide not to go private for there to be an increase, there is also a shortage of school places in North Kingston, and it is uncertain how the new admissions arrangements in Richmond will affect the Kingston parents applying to Richmond Schools as a result. The Richmond Schools with spare capacity are not near the Kingston border.