Since I'm going to Sri Lanka later this year I just checked the embassy website.
It still says that UK tourists can enter for 30 days without prior obtaining a visa.
The link is:-

http://www.slhclondon.org/hc/Instructions_Forms/visa_instructions.htm

They seem to have changed there minds

http://www.dailymirror.lk/index.php/news/6131-decision-reversed.html

Probably worth keeping an eye on if your booked to travel

Yes, thanks for that, went on the forum a few minutes ago. We were last there in June (5th time) and I was going again in September but changed my mind and now off to Mauritius but will definitely return to Sri Lanka hopefully next year.

Probably worth keeping an eye on if your booked to travel

Thanks for the warning - I love the country and am looking forward to going back in November.
It's hard to believe that they (and their important tourist industry) would set off to so cleverly shoot themselves in the foot so soon after the war finished.