My ds won a scholarship 4 years ago. The £600 paid for him to go to Cern and a few other bits, and the school gets £400 over two years (i think). . When he got through to the 2nd round he had a lovely day at Imperial, then the award ceremony was at the IET building in London, but there are a couple of other award ceremonies further away.
They also paid for a Headstart course at Imperial in year 12. He has thoroughly enjoyed the whole experience.
He also had a trip down the national grid tunnels and met a few leaders in the nuclear industry. There was also an opportunity to go to Mexico but he didnt take that up.
DS school is a normal comp and been enrolled for a few years. The year ds was entered they only entered one other who didnt get through to the second round.
DS is now at Surrey studying Mechanical Engineering.