if you get the option relocate from Ilford (shitehole) to Hertford (nicererist) = 0 commuting and trails from doorstep (all be it muddy and foul mid winter)
Chicksands has a national 4X course & freeride area
Woburn (heard good things but never been)
Wendover Woods (hilly n rooty)
Epping Forest (mudtastic clay that bakes hard)
Herts Shore (if your 'core)
If you are stuck in Ilford then SERIOUSLY consider buying a BMX and get your arse down to Rom Skate Park – its a great place – i've rolled round there a few times and fun can be had regardless of skill level
http://www.thetrax.co.uk looks like they've got some cool stuff going on down there, it a shitty area though so take a damn B I G padlock with you
i'm North London based – email in profile if you wanna hook up
PS: (not my thing but i could intro you to a local DJ spot thats off the radar)