The Bell Roundabout

This article is about the interchange on the M25.
For other junctions with similar names, see The Bell.

The Bell Roundabout is junction 22 of the M25. It used to be a roundabout on the A6 at the southern end of the London Colney bypass, with the old route and the B556. It had flared carriageways for future grade separation (possibly as the M10), which can still be seen on the northern side of the junction.

When the final bit of the M25, between the A41 and A1(M) was built, the A6 dual carriageway south of here was upgraded to motorway and the junction turned into a modified dumbbell (with an extra two roundabouts on the south side of the motorway) keeping the original roundabout.

Access to a large retail park was built off the original A6 route just off the main roundabout, adding a lot of traffic to the junction.

Routes

Route	To	Notes
M25	Watford, Heathrow Airport, (M1, M4)
M25	Dartford Crossing, Harlow (M11)	was A6
A1081	St Albans, Riverside Ind. Estate	was A6
B556	Radlett
B556	South Mimms, R.S.P.C.A Kennels	forms non-motorway route alongside old A6 bit of M25
C118	London Colney, Hypermarket, Hertfordshire Business Centre	original A6 northwards
C175	Colney Heath, Welham Green