When are you flying? Are you here yet? If so, how was the flight?
I brought mine to uk from Singapore pre-diabetes diagnosis, now he has been diagnosed, I have ruled out any future moves/travel…
Yes, inbound flights to UK always need the animal in the hold. If you could do into Europe on a carrier that allows incabin you could then travel to uk by car/ferry but I’m not sure if this isn’t more stressful.
Alternatively just break up the journey and have a short break in European country to enable the monitoring.
You can’t have things in thr carrier - for safety- apart from blankie , water bottle on door. No food , only in a bag outside carrier for when landed. No other drugs - sedatives etc. Feliway could help, but obv do a short but detailed bio of his needs to pin on outside of cage.
Either way, I advise getting a pet relocation company to help you with it all.. mine was in his carrier looong time , no diabetes at that stage though. I used Singapore Airlines, he was fine .. but I wouldn’t travel with him again unless he was in stable remission tbh.