OK everyone heres my suggestion for meeting up
Meet @ the Wharf 2:30 leaving 2:45
Then over to Thurrock services to meet some of the ESC @ 3:00 leaving 3:15
Finally off to Boreham interchange (Chelmsford) A12/A130 BP garage forecourt to meet up with the rest of the ESC @ 4:45 leaving on the dot 5:00 for Norwich