(Reuters) - British Prime Minister David Cameron's Conservatives took a two percentage point lead over the opposition Labour Party while support for the UK Independence Party fell ahead of the May 7 general election, an Opinium survey showed.

The poll for the Observer newspaper, put the Conservative Party up three points on 36 percent and the Labour Party up one point on 34 percent.

Support for the UK Independence Party fell three points to 11 percent, the lowest level in the poll since 2012, while the Liberal Democrats were unchanged on 7 percent, Opinium said in a statement.

(Reporting by Guy Faulconbridge; editing by Kate Holton)