"Londoncityslicker" wrote:
Heathrow to Blackheath in an hour would be a struggle by any mode of
transport. More like 1:30 on a good day. And probably closer to 2 hours
in reality.

Nah, most of the services are pretty frequent and reliable - within 1h15m
from the Heathrow Express departing to the train pulling up in Blackheath
should be quite possible. Simple things like getting near the front of the
hEx train to get straight down to the tube, and changing at the right places
(i.e. easy ones) will help a lot.

Depending on terminal it can take about 15 minutes just to get from the
exit of customs to either the Underground or Heathrow Express.

Suppose there is that....

Suggestions above are fine. Although I would think the cabbie would
have to go some speed and know his way around to get to Blackheath in
1hr.

Well they should know their way around, given that they've all got the
Knowledge.

So you'll have to tell them you want to get there by 11pm and let
them know you are in a rush.

BTW. Why do you so urgently need to get to Blackheath for 11?

--
"For want of the price of tea and a slice, the old man died."