Back to work yesterday and in my management meetings, nothing was said about the day before - I have no idea as to how many of my peers were in or out. It really is a case of dont ask, dont tell. If they were in, they'd know I was out.
In terms of my team, I do know, because I had to do the transaction to stop their pay. Three of my five Line Managers were out, and 10 of my examiners (out of 31) also didnt work. However, also worth noting is that of my 21 who did, 8 were recruited through an agency and are not classed as civil servants, and it was also made clear that any agency workers who went out may have their bookings cancelled. Its also worth noting that my team worked from home yesterday, so didnt have to face crossing a picket line.