S4C launched a high-definition simulcast of S4C called 'Clirlun' on 19 July 2010 to coincide with terrestrial digital switchover in Wales. Clirlun was broadcast on Freeview channel 53 only, and not via other platforms. However, following funding cuts and a review of core services it was announced on 11 July 2012 that Clirlun would close before the end of the year. Clirlun closed at midnight on the evening of 1 December 2012, with Channel 4 HD taking over its transmission capacity with effect from the next day, 2 December 2012. It was announced on 20 May 2016 that S4C would relaunch a high-definition service S4C HD on Freesat and Sky in Wales and across the UK from 7 June onwards.