To be on the safe side, and I live in Worcestershire!, at any sign of overnight frost my peaches and plums are fleeced, so yes is the answer. Don't forget in late April to apply a band of vaseline round the trunk to stop saw-fly caterpillars climbing up from the ground and into your flowers and then your fruits. Also the plum moth needs watching out for later in the season - traps available from your local garden centre.

thanks for the advice Avkq47. defo will do both as last year it suffered terribly. just so glad its doing so well this year :) so far so good!