Just posted this in Tickets & Travel & thought it should have a wider audience:
Engineering works on the tube this weekend - no service on Hammersmith & City line to Upton Park (or anywhere beyond Aldgate). Better start looking for alternatives.
Can only get as far as Bromley-by-Bow on the District line, for the same reason.
Personally, I'll be getting the overground from Liverpool st to Barking & the No.5 bus from there to the ground, but London Villans can feel free to suggest something better.