M25
J21
M25 Junction 21
Where is Junction 21?
Junction 21 is the M1 interchange: this is where the M1 meets the M25. It's on the M25's most northerly stretch, between Junction 20 at Kings Langley, 2.8 miles away, and Junction 21A, just 0.6 miles further on.
Coming off here
It's not very practical to come off here. For local roads, Junction 21A is only 0.6 miles away.
Where to stop
The better options are to join the M1 and come off at its Junction 6, or carry on round the M25 to Junction 22 and the wide choice at London Colney.
Next junction (clockwise)
J21a · 0.6 mi
Next junction (anticlockwise)
J20 · 2.8 mi
Nearest services
South Mimms · 7 mi
Connecting roads
M1
More on the M25: M25 junction map · M25 guide
Fuel near Junction 21 of the M25
Unnamed
Chiswell Green
Food & Drink near Junction 21 of the M25
Unnamed
Unnamed
Bricket Wood Cafe
Aroma Kitchen
Barkers Fish 'n' Chips
Supermarkets near Junction 21 of the M25
View all supermarkets near Junction 21 of the M25 on the map →Pubs near Junction 21 of the M25
The Gate
The Three Hammers
Outdoor near Junction 21 of the M25
Garston Park