You can join as associate member free of charge for reference purposes only or £50 per annum to borrow books; either way you would only get computer access on campus. Alternatively, you can join through your university as a SCONUL member which would allow you to borrow books how many would depend on what band your university gave you - but you would not be able to use the computers. The website for SCONUL is http://www.sconul.ac.uk/sconul-access.