My recording of the F3 race (on at 6.40am and never available on catch-up) started during the end of the first lap, and the same for the F2 2 hours later (luckily I recorded the filler programs in between, just in case the F3 overran, so I didn't miss this). I changed my box on insistence that nothing could be done until I had, and these niggling problems are still there. The EPG / recording system really doesn't work reliably as advertised, and I lose count of how many programs I've missed (or missed the start of) because of it. If I had my time again I would have invested in a dish (not cheap as I'm in a second-floor flat so the company behind the dishes can't fit them as part of the contract, I'd've had to get a local independent to do it) instead.
Sorry for the delay in responding - I'd hoped to have a definitive response on this by now, but we're still investigating.
We don't receive late updates to the TV guide from sky for their channels, so if the TV schedule changed, your TV box wouldn't know about it. This usually leads to recordings starting or finishing early though. For yours to have missed the beginning of the race, it suggests the race started early. Do you know if that's the case?
Observation Sky Sports F1 on EETV guide had live Formula 3:Feature race scheduled in EPG for I believe 6:50am to 8:55am (Sunday 07 June.)
Another TV listing site has programme for that race on a Sky Sports F1 channel as starting at 6:40am. (although they did say the race itself was due to start at 6.55am)
For the Live Formula 2 Feature race for EETV programme seems to be 8:30am to 9:50am
whereas other TV listing site has the programming starting ten minutes earlier at 8:20am (race itself starting at 8:35am)
(the guide i used for comparison was
https://www.tvguide.co.uk/channel/sky-sports-f1?date=2026-06-07
So it does look like a 10 minute change in scheduled broadcast times occurred at some point.
Thanks @zulu17 - those changes were never communicated to us. I'll try to find out why.
Just to add that I had the same happen to me.
The F3 race was recorded from 6-50am to 7-54am with the programme starting half way through the first lap.
The F2 race was recorded from 8-30am to 9-49am with the programme starting just as they were forming up on the grid from the formation lap.
They're never on NowTV unfortunately. Same goes for the IndyCar, of which I missed the end as it overran (having started at 2am Monday UK time, so I hope they'll forgive me for not staying up to watch it...)