Thank you, James, for the ID of the Adams & Co. coal scuttle / bucket.
Thank you, Sid - so it is! Perhaps I''m just 'scuttle blind' after seeing so many other pressed glass coal scuttles / buckets, but I can't seem to find it on the Thistlewood Sowerby CD-ROM catalogue sets - the swans and shoes etc. are there on page 34 of the pattern book XV (1895), but not the pattern 1970 coal scuttle.
I notice that the illustration in Thompson does not note it as a regsistered design (but neither does it mention any of the other patterns as being from registered designs either), so it looks as if I can now link the Sowerby pattern 1970 coal scuttle to James's RD 98215 of 18 April 1888.