The pop star famed for her outrageous outfits and individual style was in good spirits as she appeared in a black-and-pink outfit, with sparkling jewellery bands on both arms.

She was a human dynamo, leaping up and down pogo-style during her popular number Danced, dancing across the stage and even descending the steps to be closer to the estimated 5,000-strong crowd at one point.

Toyah had taken to the stage at 9.30pm with her own lively opening number Good Morning Universe, and followed it with the Alice Cooper hit School’s Out for Summer.

Having mellowed a little from the rebel status of her heyday, the 50-year-old star told the audience: “Don’t worry, I’m going to behave myself – there are a few children here I realise.”

Her set included other numbers from her career of 30-plus years, during which she has had 13 hit singles and 20 albums.

They included Echo Beach, It’s a Mystery, Thunder in the Mountains, Jungles of Jupiter and Latex Messiah.

Toyah concluded the main set with the Guns N’ Roses classic Sweet Child O’ Mine but, having wowed the crowd with her enthusiasm and verve, was called back for a well-deserved encore.

Her finale was the Osmonds’ number Crazy Horses and then her own I Want To Be Free, during which the generator broke down a third time. On restarting, she said: “I love the unpredictability of this gig!”

During the show, she told the crowd: “I have had such a nice day in King’s Lynn – it’s been beautiful. It’s a really fantastic town. I love it.”

And in an email to the event organisers afterwards, she said: “King's Lynn is doing something that every town in the UK should be doing – offering free live music to everyone, with their unique festival, Festival Too.

“I played Festival Too and had the time of my life... The atmosphere is truly magical and all ages are welcome.”

Earlier in the evening, KL.FM Battle of the Bands' runners-up The First entertained the early arrivals with a lively 45-minute performance of their own rock numbers.

They were followed by four-piece blues, rock and rhythm and blues band After Hours playing some classic covers from the ’60s,’70s and ’80s.

Mike Last