The A2218 is a short link road in the south of the London Borough of Lewisham. The road was unclassified in 1922 and although the number is the first A22xx available following the original classification the road does not seem to be marked as classified on maps until the 1950s.
The road starts at traffic lights on the A21 Bromley Road and heads roughly westwards along Southend Road. The road is initially dual, although there are no road markings to divide the road into lanes, or to mark out parking. The road narrows to cross a bridge over the Catford Loop Line and then widens again immediately afterwards.
Railway bridge with rather large warning sign
The road continues west along a tree-lined avenue through the suburbs. The road narrows again just after crossing a small stream and goes under the Hayes Line. This is a relatively low bridge and there are a number of signs to deter overheight vehicles. The central reservation returns for a few yards to a set of traffic lights serving Sainsbury's, after which the road splits. Westbound traffic follows Stanton Way, whilst eastbound traffic remains on Southend Lane, one block to the north. The two branches of the road end on the A212 at adjacent sets of traffic lights.