The following sites are suppliers of a wide range of tools for aspects of woodwork and construction and some of them sell turning tools, lathes and accessories.
www.dm-tools.co.uk
www.screwfix.com
www.toolstation.com
http://diytools.com/default.asp
www.powertoolsuk.co.uk
www.axminster.co.uk
www.price-tools.co.uk
Camvac dust extractors; no frills - good prices.