B198 Road

From: A10 / A121 junction near Waltham Cross
To: B156 in Goff's Oak near Cheshunt, Note: The Cheshunt Southern Relief Road, formerly part of the A121 and renumbered around the time this section of the M25 was completed. Road number is duplicated in Wisbech with both still being in use.
Roads: South Brink
Cities: Cheshunt, Elm, Wisbech, Waltham Cross, Walsoken.