
The best places to look for pedigrees would be either, The International Flatcoat Directory which is run by Brenda Phillips and is made up of a large majority of british dogs - http://www.flatcoated-retrievers.com/
the other site is the pedigree data base on - http://www.worldpedigrees.com/ which so far when searching I have managed to find a large majority of the pedigrees
for breeders website the best starting place is to actuall look on Champdogs, where a number of breeders either have information on or links to their own websites - http://www.champdogs.co.uk/guided/all_flat-coated-retriever.html
Hope that helps
Heather