OK, I think google blogspot have a bug, so I have had to do a work around.
It seems you can have a blog on your own domain, e.g. www.example.com, and by setting a CNAME on that and A records on example.com it should work as either http://www.example.com/ or http://example.com/
Problem is the domain for my blog is www.me.uk
This is great, except they do not allow you to use a naked domain like that. So I make revk.www.me.uk and set up the CNAME for that and A records on www.me.uk as per their example.
Sadly that just left a page not found on www.me.uk which is probably google blogspot removing the www part and then looking for a matching blog, duh. I cannot find any sane way to get a fault report in to them.
So, now, www.me.uk is a simple redirect on a web server.
Of course, for fun, try just me.uk as my blog and most browsers add the www on the front :-)
The new URL for my blog is www.me.uk