It doesn't look very moundy I'm afraid.
http://www.uel.ac.uk/rising-east/vol3/num3/pdf_files/morrad.pdf

It's a shame isn't it. London was a squelchy bog and then anything left by anyone prehistoric was ripped apart to build a dirty great city and there ain't nothing left but enthusiastic speculation and a few things in the Thames mud. Aren't you jealous you don't live in the lovely south west where we're tripping over barrows and stones left right and centre. (evil cackle).

Sorry. I don't mean it.
You go for it. Hard work is good for you.