This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.
It appears that we have a problem with the html5 aspect of the BATC Streamer this morning. You can still view the Flash element of the streamer using VLC:
Open VLC. Select Media, Open Network Stream and type [code]rtmp://batc.org.uk/live/gb3zz[/code] and then click Play. Of course, replace gb3zz with the name of the stream that you want to watch.
We are working on restoring normal service.
See https://wiki.batc.org.uk/Watching_the_streamer_with_VLC for more details.