Don't know how reliable it is but just looked at awaygames.co.uk which suggests (for away fans at whu):
Tap East, closest to Stratford and possibly a nightmare walk thru westfield shopping but sounds a good beer selection
Golden Grove, small spoons heading away from stadium to the east, near Maryland stn
Howling Hops Tankroom, nw of the stadium, near to Hackney Wick stn which is walkable from Stratford or Vic line 2 stops from euston to Highbury then change for (what I think is the) North London overground line to HW.
Be interested to hear where Blues have gathered in the past.