You need to go on the hunt for CCTV yourself before its too late, London surely has extensive coverage, they manage to follow terrorists etc street to street. Police are well lazy/busy with other things to chase these things up properly. Make sure you get down to the site and check everywhere for CCTV even in shops/private buildings/carparks, if there is any recording it probably wont be kept for much longer.
You need to go on the hunt for CCTV yourself before its too late, London surely has extensive coverage, they manage to follow terrorists etc street to street. Police are well lazy/busy with other things to chase these things up properly. Make sure you get down to the site and check everywhere for CCTV even in shops/private buildings/carparks, if there is any recording it probably wont be kept for much longer.
Sorry if this was patronising, Good luck.