If you're heading for london or the SE make sure you've enough fuel to get back home again because you won't find anything down here locals are are like bird twitchers passing information on facebook etc "theres fuel down at xxxx! Get down here asap!".
I agree!
Had some errands to run in North London earlier. Of the petrol stations I passed:
Esso - No fuel
BP - No fuel
Shell - No fuel (Stirling corner on the A1 roundabout)
Morrisons Superstore - Presumably had fuel. A queue was just backing up onto the roundabout as I passed. Looked on gmaps traffic before heading home and there was a half mile tailback along the A1 and the minor roads were snarled up
Tesco Extra - No fuel
Shell #2 - Had fuel. Fortunately the road was wide enough that cars heading in my direction trying to turn right into the petrol station could make a line down middle. Traffic in the other direction was gridlock. Cars were trying to drive down the middle of the road but got stuck when they reached an oncoming line the middle turning into the petrol station..
BP #2 - No fuel
Esso #2 - No fuel
/edit the #2 petrol stations are different locations to the first ones. I was not driving back past the original ones again.