Confirmed I could not get in initially but now I have switched mode I am in the game.
Please continue to report any issues here whilst I attempt to contact support.
I got an "unrecoverable error on transaction server" about 19.40 BST. I then got "there was a problem retrieving Commander data from the server. Try again in a few minutes" and finally after a reboot, I get "Connection Status: Your client is too old - please upgrade to the latest version of Elite Dangerous"
Hmmmm - I think the servers are down