Motorway gantry sign
A gantry spanning the motorway with blue overhead signs indicating two lanes exiting and one continuing ahead, and the following text.
Left-hand two lanes destinations: M25s (M3, M23, M20); Heathrow [Airport symbol]; (Terminal 5) ; Gatwick [Airport symbol] .
Right lane destinations: M25n ; Watford (M1); Oxford (M40).
Change Route: M25 Gatwick or M25 Watford
The two-lane sliproad runs alongside the M4 for a little while before splitting in two, offering you a choice of directions on the M25.