Here's another modern one.

http://news.bbc.co.uk/1/hi/england/devon/2985083.stm

In 2003 it was reported by the BBC that a Devon farmer called Gavin Dollard built a Bronze Age burial chamber on his land at Ivybridge in Devon. He plans to be laid to rest in the chamber.

Personally I think tis only possible if you have access to some huge stones and a JCB. : (

Phil