BASE jumping

This composite image shows a member of the UK ProBASE team jumping from Kjerag, Exit 6, in Norway.  Photographer Darren Birkin

Rather than doing their jumps illegally, the team is changing the face of this extreme sport by making fully legal, authorised and insured base-jumps.

Their exploits have been captured by IT consultant and base jumping enthusiast, Darren Birkin, 43 from Potten End in Hertfordshire.