Closed stacks makes browsing difficult. Browse related catalogues . In South Kensington. Access to catalogue . This has a very good collection of STS and HPS material.
Reference librarians are plentiful.
183 Euston Road. Access to catalogue . Especially good for recent HPS journals. Expensive to photocopy, however, though the reading facilities are delightful. Check the catalogue Library information Students has to meet special access requirements Local Booksellers For required books, I inform these local booksellers about the need.