In message , Derek Turner
writes

On Wed, 26 Jun 2013 16:26:28 +0100, David Rance wrote:

If anyone has any ideas I would be most grateful.

My guess (and it is only a guess) would be peach-leaf curl.

No, I've seen peach leaf curl and it doesn't look anything like that.

David

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David Rance writing from Le Mesnil Villement, Calvados, France