Early contenders this year include a mini-pub shed called The Ballroom at Keyworth in Nottinghamshire.

Rivals include the VW-themed Pear Tree Wedding HQ in Northamptonshire, a bunker-like Biker’s Shed near Chichester and a Pirate Retreat in Croydon.

To coincide with the launch of the 2015 competition, sponsors Cuprinol have published its annual ‘Shed’onomic’ report on the nation’s garden shed habits.

It reveals some of the bizarre items that Brits horde in their sheds including ex-husbands’ possessions, retro cassette tapes and Second World War gas masks.

The report also reveals that the garden shed industry is now worth over £8billion to the British economy, with more than 21 million people in the UK now owning a shed.

The report also found that ‘Sheddies’ will spend nearly a year in their sheds during their life, but that nearly a third admit their shed is so messy they can barely get through the door.

Cuprinol is urging Sheddies to clear out the junk and transform their sheds into a garden sanctuary and enter it in the Shed of the Year competition.

Last year’s winner was Joel Bird from London for his eco-friendly Allotment Roof Shed which he built from scratch using recycled materials and used to grow an array of vegetables.