Ok, so here's the skinny..
unfortunately I cant get ya tickets,but i have been informed that whilst you're here you can buy tickets on a match day(usually saturday,kickoff between 13.00 & 15.00hrs)..approx cost is £20-35,for premiership or first division games..You should be able to get a list of football fixtures for the days you are in the UK..Most probably, the London area teams (West Ham/Tottenham hotspurs/Arsenal) will have a game at their home grounds, but the fixtures list will say if it is a home or an away game.....
Or alternatively, there are a magnitude of clubs in the lower divisions 2,3 that again will have games over those days, and accordingly the entry costs should be significantly lower...prolly between £10-20..


hope this is a help..