One hundred brave souls are abseiling down the north face of Bucks County Council tower block today in the name of charity.
The volunteers of all ages - including one dressed as King Kong - will make the 200 ft descent between 10am and 4pm.
And it is hoped £10,000 will be raised for Bucks Youth Bank a charity supporting projects for youngsters.
County council chairman Carl Etholen, leader Martin Tett, chief executive Chris Williams, and High Sheriff Sir Stuart Hampson will be amongst the first people to go over the edge.
The last time an abseil occured at the tower which overlooks the town centre was 20 years ago in 1993.
Bucks Herald advertising display manager Kelly Williams, 32, is one of the volunteers taking part this weekend.
She said: “We were asked for someone to represent the paper and I’ve never done anything like this before so I thought it was something to knock off my bucket list.
“I am very very scared, but it’s a chance to raise money for charity.”
Joining Kelly will be Aylesbury man Paul Smith, 41, who will be dressed in costume as King Kong, and also young national swimming medallists Caleb Hughes and Shauna Lee.
The Herald’s Heather Jan Brunt will be reporting live from the abseil. You can see her updates here