dont need a streetmap mate, its on the main road
jump on A127 eastbound (towards southend) its the HALFWAY HOUSE junction (signposted) its the 1st big one, cant miss the oub its next toa littlechef on the sliproad...
you'll DEFINATELY see it from the A127, probably as you drive straight past tho
just stick in the left hand lane all the way from the M25, that way you cant go wrong, its only about -3mins down the road