Lights

And for a front light reserved for urban rides or low lighting (not pitch black mountain biking just a country road or bad lit backstreet) which of the two is best?
RSP RX480 (Just front light)
Moon SHO6L
again, would anything else be recommended? Limit is £20ish

This is reasonably well reviewed (on road.cc, wiggle and tredz) and cheap:

http://www.rutlandcycling.com/102271/products/moon-mask-5-0-usb-front-light.aspx

Although I wouldn't necessarily describe it as heavy duty. I hope to get mine in a few days so I can give you a more informed opinion then.