NOT to be confused with the sword and sandals fantasy Clash of the Titans, this fun and frequently hilarious sci-fi fantasy is promenade theatre at its best.

Making its way across the parks of south-east London, Sydenham’s lush and undulating Wells Park was the perfect setting for the tour’s first leg.

From being kidnapped by Martians to becoming a messiah, the play tells the tale of one man’s bizarre space odyssey.

As the audience, quite literally, follow the characters from scene to scene, you can't help but be utterly charmed by the performances and the tremendous amount of thought which has gone into adapting the action to fit the landscape of the park.

There are also some neat little touches which further immerse the audience in the drama, such as the chewy bon-bons, or 'goof balls', which are handed to everyone to aid breathing on the oxygen-starved Mars and the cup of hot chocolate which was a welcome warming treat in the slightly chilly evening air.

With brilliant flights of imagination and gloriously silly props, the park is transformed into the wastelands of Mars one minute and the eerie caves of Mercury the next.

So utterly engrossing is the play at times, it's easy to lose your way and forget where you are.

The plot may be wonderfully convoluted but forget about that.

Just pull up a chair or rug and enjoy the ride through time, space, infinity and beyond.

The Sirens of Titan. Oxleas Woods, Greenwich. Until August 9. Then Hilly Fields Park in Brockley from August 11 to August 14. To book, call 020 7237 1663 or visit londonbubble.org.uk