A-road junction roundabout sign
A green sign with a diagram showing a roundabout at a motorway-type junction with exits ahead, left and right, and the following text.
Ahead destinations: Hatfield; St Albans A405 .
Left turn destinations: (M40, M4); Heathrow [Airport symbol]; M25; Junction 21A [Motorway symbol] .
Right turn destinations: (M11, M20); Stansted [Airport symbol]; M25 [Hollow triangle diversion symbol]; Junction 21A [Motorway symbol] .
Change Route: M25 Heathrow or M25 Stansted
We reach Bricket Wood Interchange, where we have a choice of the M25 east or west.