Children's charity NCH is looking for more than 200 participants to abseil down 350ft (25 floors) from the top of the Union Jack Club at Waterloo.
The challenging fundraising event is taking place on Thursday 8 and Friday 9 March and promises to give abseilers a spectacular bird's-eye view of London as well as raising more than £20,000 for NCH.
"NCH works with over 160,000 children and young people and with so many vulnerable young people relying on us, we are asking office based workers to help us raise as much money as possible. Dare to make a difference to a vulnerable child in your lunch hour!"
Each participant is asked to pledge to raise a minimum of £100. £200 would help NCH to prevent a vulnerable child going into care and any abseiler that raises more than this sum will be entered into a draw to win an adrenalin-fuelled 203mph aerobatic flight.
Mile End Climbing Wall is providing a team of highly skilled and experienced instructors to ensure that the Waterloo abseil is carried out in complete safety and the NCH fundraising team is on hand to help abseilers with tried and tested ideas to help you raise as much money as possible.
To register to take part, download a registration form from www.nch.org.uk/events or email London.email@example.com or call the NCH fundraising team on 0121 321 5193.