Buried somewhere under four feet of mud and rubbish, in the Docksway landfill site near Newport, Wales, in a space about the size of a football pitch is a computer hard drive worth more than £4m.
It belonged to James Howells, who threw it out when he was clearing up his desk in mid-summer and discovered the part, rescued from a defunct Dell laptop. He found it in a drawer and put it in a bin...