Just picked one up from Superdrug Bayswater, because my beard trimmer failed on me. Comes with everything. Built like a tank. Just like the ones at your barbers. Save a fortune on hair cuts.
Great review here, girls, if you're looking for a Christmas prezzie... http://www.ciao.co.uk/3M_Wahl__Review_5314298
Also available online (http://www.superdrug.com/invt/178489)