Nominet, which runs the *.uk namespace, has been maintaining several mailing lists for its members for years. Starting in September the mailing lists will be replaced with a forum, which will have an email function.
According to the announcement members may opt to continue using email to interact with it, or use the web based forum.
Personally I’m not overly impressed with this move, as I find mailing lists are a lot easier to follow and interact with.
How the email to web interface will work in reality remains to be seen.