Can't help you guest but for your information, the Bucks Training Group are holding a Flatcoat Working Test tomorrow at Little Hampden, Bucks. Unfortunately I wont be there because I'm tied up taking a training class tomorrow, but it should be a good day.
You could try the web site Julian Tidmarsh has as they have all the flatcoat open show results on it. I think the address is www.flatcoatedretriever.co.uk Polly & Foxpath Flatcoats