I just bought these:
http://www.conti-tyres.co.uk/conticy...ctwinter.shtml. Mine are 28" but they are also available in 26". I picked them up in Canada for C$65 and they run for about 50 quid or so in the UK.
They are no replacement for studs in icy conditions but given the UK climate and that of Southern Ontario they're pretty good all round winter tire.