The
Aidgap - Keys to families of British Spiders, 1989 Jones-Walters is a good guide in getting to family level and for photo based i.d. though only as a rough guide, "THE COUNTRY LIFE GUIDE TO SPIDERS OF BRITAIN AND NORTHERN EUROPE", DICK JONES, COUNTRY LIFE BOOKS, 1983. ISBN 0 600 35665 5 (SOFTBACK) is well worth a look, though is hard to source and expensive nowadays (and to think I bought a few of these for a few quid each in the late 80's and gave all but one away

)
No.9 Spider