HD Fox and HDR Fox (standard software) were both set to AR record, from Standby, the Sunday 12.30 BBC News on BBC1.
Both units recorded the programmes correctly between 12.30 - 12.40 BST.
Both units, in their libraries, showed the recording as being between 11.30 and 11.40.
Both units showed GMT prior to and after the recording which was done in Standby.
On powering down, after viewing the recording, the HD Fox clock flashed GMT for about 1/4 second before changing to BST. HDR Fox clock was not watched.
Thus Brian is correct, the clock display needs a power cycle to update to the correct local time.
My concerns about missing recordings because of BST changes have been allayed.
Martin