Four plucky London Zoo staff members went au natural in aid of Streak for Tigers during a run around the ground after hours.

With a group of tigers called a ‘streak’, the event sees runners ditch their garments to be as nature intended to take in the sights of the zoo, with a new route planned for this year.

The event takes place on August 10 at London Zoo, and previous runs show sporting participants donning tiger ears, tails, face and body paint - with the zoo providing some accessories.

Some 300 runners will pound the pavement with the aim of raising £40,000.