Adhesive for the glass on the screen

Hi, I had to replace the glass cover as the old one had cracked.

The only problem is that the new perspex/glass cover had only double sided sticky tape on it to hold it onto the metal behind it and is coming off every time I open/close my mac even after removing the old glue from the metal section

I was wondering if there is any sort of adhesive strips I could get to attach it properly or even double sided sticky foam but what thickness would you recommend..

I've searched online and I can't find any strips to buy locally (I live in the UK) so I would be happy using the foam but I'm unsure as to the thickness.. :S

Many thanks!!