The only "intact" Hampden in the world is in Canada...
Handley Page Hampden | The Canadian Museum of Flight
Here is info & pics on its "restoration":
A Warbirds Resource Group Site :: View topic - CMF Hampden Restoration pics
A couple of pics of its pre-restoration state here:
Key Publishing Ltd Aviation Forums - View Single Post - Canadian Museum's Hampden Damaged by Snow Fall
There is another being reconstructed from two wrecks in Britain, which is the one mentioned in the thread-starting link.