I don't know about London libraries but the Bodleian in Oxford offers associate membership. It's about the same rate as other university libraries in the UK h

I don't know about London libraries but the Bodleian in Oxford offers associate membership. It's about the same rate as other university libraries in the UK http://www.bodleian.ox.ac.uk/using/getting-a-readers-card/charges http://www.bodleian.ox.ac.uk/using/getting-a-readers-card/ch...