Whitty

It is cheap but remember there will be a large excess if you drop their bike which will feel alien to you. My advice would be do it on your bike you are comfortable with the feel of. Take it easy and get instruction(ususally free these days). Crashing isn't compulsary! Then if you love it you can put your hire fee in a jar towards a cheap trackbike. Trust me its addictive and those hire costs will soon add up.