On this page you can find a list of anime stream sources and content that’s available to the UK.
Crunchyroll offers free anime streams supported by advertising and also subscription based streams without ads.
Manga Entertainment is a UK anime distributor and also offers selected titles for streaming on their website.
|Full Metal Alchemist – Brotherhood|
FUNimation is a North American anime distributor. Videos on their main website are not available to the UK but some of the videos on their ad-supported Youtube channel are.
(Thanks to @UKAnime for the information.)
This page is a work in progress. Check back for updates.