Edit: After a reboot the problem was solved but feel free to add avice for anyone else.
I found that the warning message was just to be ignored
Sid Unstable and Jessie Testing have moved on past hard listed boot number ordering and have gone entirely to dependency based booting. It means you are running Testing or Unstable. It means that some package that you installed is still using the previous interface with the hard set boot order numbers which are now being ignored. You can ignore it. Or you can file a bug against the package that produces it that they need to update their update-rc.d call syntax. Personally I would ignore it. Eventually there will be an automated test that will detect all of the packages using it and bugs will be filed.
When I try to type @ I get " so I use the command
sudo dpkg-reconfigure keyboard-configuration
I changed to uk keyboard but then got the message
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults