I reallllly must figure out how to get from Edgware, Middlesex to Heathrow T3 on May 17th.

That is all.

EDITED: I think I have the route sorted. I'll be taking the tube and the above ground rail to T3.

I do believe I will get to know London's Transit system better than the one in MenoLand!!!

actually the transit system here is dead easy compared to London's. There are 2 subway lines in Toronto, a couple of Go-Transit rail lines and a gazillion bus routes