Help to ID sail boat

[pcv]

I would like help in identifying a boat .
The boat is about 17-20ft long,very small cabin, GRP construction,swing keel with two small bilge keels.
The only ID is a small plate ( very hard to read ) with ( made in england , Small craft , Blockley LTD ) I think .
Any help I would very much appreciate

 

[Nigel_Ward]

I think the boat you describe may be a SEAFARER which was built by Small Craft, Blockley, Gloucestershire in the late 1960s. I have a 1968 Yachting World which gives a small write up in a rally for under 25ft boats. From the photo the boat has as very small cabin with a centreboard case in the large cockpit and a very large square transom. The design was by Alan Buchanan. The sail mark is SF.

 

[pcv]

Thanks The information on the boat you describe seems to relate to the boat Iv seen.
If you have any more Info on the ( Seafarer ) I would most appreciate It.