He has a 6.1 rating and judging from http://lta.tournamentsoftware.com/sport/event.aspx?id=766D5F6D-BD97-427B-BBF6-30D711EE89D9&event=4, he entered the junior nationals last year but didn't actually play, presumably he didn't make the qualifying cut.

There's a bit more about him here http://www.hackneycitytennisclubs.co.uk/juniors/player_profiles.htm

So, not the prospective Wimbledon Champion that Boris allegedly hyped him up to be, but a decent county level player by the looks of it. At least he's still playing tennis!