These new Zhengrun RC helicopters are pretty nice and high spec'd for the money. Here's another one, 2.4Ghz 3CH, 25CM with metal frame. Only £24.98 including VAT and free delivery! That is amazing value..

Z010G 3Ch Metal Co-Axial Remote Control Helicopter With Gyro - 2.4Ghz

Z010G 3Ch Metal Co-Axial Remote Control Helicopter With Gyro - 2.4Ghz