EXTRAORDINARY bakers from Harrow donated a huge novelty cake to Channel 5 which was used for Celebrity Big Brother birthday antics.

Kool Cakes, which have three branches in the area, spent more than 100 hours building a half-ton cake for Frankie Cocozza's 19th birthday.

The former X-Factor contestant, now one of the BB housemates, had to stand on the cake as part of a task.

Ashit Shah, who runs the bakery with codirector Kulwinder Kumar, helped to make the cake for Channel 5 and estimates the cost ran into thousands of pounds.

He said: "They approached us and said 'We have got this plan'. It was quite difficult to build without support or structure. The whole thing you see is just cake. We were so excited we forgot to ask them why they chose us."

Mr Shah said that it took one week to plan, three days to bake all the parts and 10 hours to put together, which they did at the Channel 5 studios in Elstree.

The baker also estimated that it contained 250kg of flour, 30 kg of jam and 30kg of icing sugar.

The business was started 20 years ago by Mr Kumar, whose nickname is Paul, and was known as Paul's Bakery until three years ago.

Although Mr Kumar has many years experience of making cakes and has constructed a church, a 21-tier cake and numerous novelty cakes including a dinosaur and a spaceship, he has never done anything on this scale before.

Frankie, who was contraversially sacked from last year's X-Factor competition, was asked to climb on top of the cake dressed as a giant candle.

Kool Cakes, which has branches in Honeypot Lane, Kingsbury, Central Parade, Heston and Pinner Road, North Harrow, also made a number of smaller cakes for the contestants to eat at the birthday celebrations.