iPad Screen Not Displaying Correctly

I have been using my iPad today and it was working fine. I switched off temporarily and a few minutes ago I switched on and all I got was a screen full of jittering wavy grey lines. I could make out the time behind the lines but that was about all.I tied to reset it, but the red line appeared at the top of the screen. I slid that and the Ipad tried to boot with the circular thingy in the middle of the screen but it failed and all I have is a black screen now.

It is an iPad 1 which I have had for a year or more. I am away from my base in London UK and cannot get to the Apple store.

The battery is fully charged.

Is there anything I can do or has it gone to the iPad heaven.

Surely it should have lasted longer than this.

Anniel34