The global superstars dressed up as workmen and pretended to fix water pipes outside Horsham teenager Justine Thompson's home as part of the GMTV wind-up.

Justine – who has McFly posters plastering her bedroom wall and has tickets for three McFly concerts over the summer – said she was very embarrassed when she realised drummer Harry had been sat in her front room watching cricket with her dad.

"I just couldn't believe it," Justine, aged 16, said.

"The workmen outside my door were McFly and I had been getting so annoyed with them asking me for cups of tea and using our toilet."

Justine set up the practical joke for her dad, Trevor, who teases her for her McFly obsession by calling the band McFlurry.

But little did the former Millais School student know when mum Pam took her shopping in Crawley on Monday June 30 that the tables had been turned on her and that GMTV presenter and former Dancing on Ice star Michael Underwood was at her home in Stirling Way hiding cameras in trees, a CD player, a broom and a spatula in the kitchen.

Justine's McFly experience was shown on GMTV's Richard Arnold Weekend Wind-Up on Friday July 11.

For comprehensive coverage of all the stories making the local news, read Friday's edition of the West Sussex County Times newspaper. Website users who wish to purchase a copy of the County Times newspaper but live outside our circulation area can do so by telephoning 01403 751200 and asking for reception. The cost of the newspaper plus postage in England is £1.53 which can be paid for by credit card. Overseas rates are also available, on request.