An Enfield 'Bullet'

Honestly, I thought it was a Royal Enfield but that was as far as my knowledge went. However I asked the question on facebook and this is a quote from there which explains further this motor cycle.

'An original British one, rather than the present Indian-made copies. (You can tell by the inclusion of the neutral selector, seen just behind the right-hand gear pedal and kick-start. Its probably the 500cc model - they also made a smaller 350cc variant).