A 10 from Len: Strictly special to drive biggest TV power spike this Christmas

National Grid expect Len Goodman's show to create a 'TV pickup' as people across the country boil kettles, flush toilets and switch on lights after the show

Len Goodman will follow in the footsteps of David Jason, Pauline Collins and an extraterrestrial as one of Christmas TV's top challenges for the people tasked with keeping the lights on.

When the judge finishes reminiscing over 12 years of Strictly Come Dancing on Friday night, kettles will be boiled, lights switched on and water company pumps powered up as toilets are flushed across the UK.