From London go west towards Southend on the A13, take the exit marked Dagenham, go past ASDA and turn left at the lights onto the Heathway, proceed as described above.
From the M25 A12 Junction go towards Romford. At the major roundabout - Gallows Corner, turn right onto Eastern Ave, A12 towards London. After 4 or 5 miles at the junction with Whalebone Lane, The Moby Dick on your far left, turn left. Go to the end of Whalebone Lane. Stay straight at the lights onto Wood Lane, past Morrisons supermarket and take the left fork at the lights onto Heathway. 591 Heathway is 100 yards down on your right.
From Heathrow M25 turn off at M11 junction. Go South to the end of the M11, stay going south onto the A406. Proceed to the junction of A406 with A13, go west, left, onto the A13 turn off at Dagenham junction and proceed as for London above.