The Conservatives maintained their overall majority of the council, gaining four seats from Labour and three from Longthornton and Tamworth Residents Association; the latter lost all of its three seats in Longthornton.[1] At the last election, the Conservatives did not contest the ward of Longthornton.[2]
The Conservatives gained three seats from Labour in Abbey and one seat from Labour in St Helier. However, the Conservatives lost two seats to Labour, one in Phipps Bridge and the other in Graveney.[1][2]
The SDP-Liberal Alliance failed to hold onto the seat it had won in the by-election in Ravensbury, where it polled behind Labour and the Conservatives. Nevertheless, the Alliance won 21.5% of the vote share and was within 6,000 votes of the Labour Party; this was a significant improvement on the local electoral record of its predecessor, the Liberal Party, which had won 8.3% of the vote share in the 1978 election. In the face of the Alliance's surge, all recontesting parties lost vote share.[1] By seat share, this was the worst result for Labour in Merton since 1968.[3]