Steviecee
I obtained, from two contacts, different drawings at 1/48th. One is not so detailed but does give hull profiles and simple outlines for the superstructure. The other is an "altered" copy of shipyard drawings for P28, a Sunderland built vessel. It has no profiles. I understand these modified shipyard drawings also originally included the "internals" but these have been removed . It's still a detailed but very cluttered drawing and not easy to interpret. I am also unsure if there is copyright on these latter drawings so I am unfortunately unable to supply copies . May I suggest you go to this link.
http://www.twmuseums.org.uk/engage/blog ... m-and-p23/ The museum has has an excellent model and might also hold the plans.
I plan to redraw the two sets of plans as a more easily interpreted model builders drawing (still at 1/48) some time in the future.
These are fascinating vessels.