Welcome to the site and I apologise for the delay in approving your membership. I am always careful with registrations that appear to be "trade" as we have had some register and then post nothing but ads for their services...
Might not be able to ID from the numbers but post some pictures and we'll soon know.
Search the forum for "Phil Read Replica", "Seeley" or "Honda Britain" and you'll see pictures that other members have posted of their bikes.
Hope this helps you ID the bike.
Steve