Just ordered this - is £29.99 compared with approx. £45 elsewhere. Not received it yet so can't review but lots of reviews on wiggle that are good. Front light only.
http://www.cooksoncycles.co.uk/accessories/lights/cat-eye-el300-au100-lightset-british-standard
http://www.cooksoncycles.co.uk/accessories/lights/cat-eye-el300-au100-lightset-british-standard