Here's one:
Philips 3480 DVD Recorder:
http://direct.tesco.com/q/R.200-5274.aspx
Personally, I would recommend buying a DVD recorder that is capable of
recording in both formats (DVD+ & DVD-) otherwise you'll be limited in the discs you can buy.
Most DVD players/recorders can playback both DVD+ and DVD- discs but only certain models can record in both formats.
To be honest, my DVD Recorder is a Lite-On LVW-5005 and the only reason I haven't recommended it here is because I bought mine five years ago and I'm not sure if they're still available. Most companies seem to have moved on to producing HDD recorders now. That said, you can still get Lite-On DVD recorders (albeit a different model to the one I have) but they exceed your price limit.