I've finally done it. Followed the example of some others and spent a very small amount of money and bought myself a domain. You'll still be redirected if you used the blogspot.com address but if you want the new address, here it is for your bookmarks. The blog should show up as normal. I'm still working on bits and pieces, but so far they are behind the scenes admin things which won't show. Hopefully all looks well.
It is possible that a couple of days may pass before automatic transfer to the new address.