iPad 2 keeps dropping wifi signal

Hi all, I'm hoping someone can help with a very frustrating problem.

I have an iPad 2, running iOS 6.1.2 (10B146). My home wifi network is provided by BT Infinity (I'm in the UK), via a BT Home Hub 3. Very frustratingly, my iPad is dropping my internet connection, frequently but seemingly randomly.

The wifi is stable for all other devices (iPhone and laptop), I never experience drop outs with either of those devices.

I've tried re-booting my router, but this hasn't helped. On my iPad I've tried Resetting Network Settings, but the problem persists.

When I lose my internet connection, I don't actually lose my wifi signal, the wifi icon remains in the top left corner, and the correct wifi network is still 'ticked' under my wifi settings. The only way to restore my internet connect is to turn my wifi off and on again, this solves the problem until the next disconnection.

It's driving me mad at the moment. My ipad appears to be fine when connecting to other wifi networks, which led me to think it's a problem with my router. But the fact my other devices are not dropping connection leads me to think it's a problem with the iPad.

In my wifi settings on the iPad I'm using DHCP, no HTTP proxy.

Any suggestions would be much appreciated!