Question about testing positive while on holiday

[Halfwaytoholiday]

This is all hypothetical, but I woke up worrying about it!
Specifically, what would you be expected to do if you tested positive (or one of the family with you did) while on a U.K. holiday in self catering accommodation?
I know the cottage we are soon to stay in is booked straight after our stay, so we couldn't stay there, but would we be allowed to travel home? I can't imagine any hotel being keen to take a booking in those circumstances!
Travel home would involve a ferry so not just staying in our car the whole way.

Tricky one
I went to a cottage last month and the new Ts and Ca said that if got tested positive we should leave ASAP if able to do so and do most of our self isolation at home. No refunds.

Ferry complicates things. You could probably stay in your accommodation until the end of your self isolation but I can’t see any choice other than take the ferry or find a hotel to have you until you were clear.

Ps hotel really not a good idea unless a very posh one with room service as you clearly can’t get fed without leaving the room. I’d be staying at the cottage then just travelling home as usual tbh to finish isolation. I think there’s no clear guidance on stuff like this

Thank you! I found some guidance (for England) that talked about returning home as quickly as possible - this does make me think of trips to Bernard Castle etc! You aren't allowed to stay in your car on the ferry and would probably need a toilet at some point anyway.
Let's hope it doesn't happen - it crossed my mind as was planning to take LFTs before visiting a relative and it could lead on to this! Dh and I both double vaxed but the dc aren't.
Thank you for replying

This is a really good question. We don't drive at all, so would have to go back home on the train, which wouldn't be good. (We're not going on holiday this year, partly for that kind of reason).

Oh I know, it's a risk isn't it - but I haven't seen the family who live there since before all this started and really don't want to wait another year!

I wouldn't test while I was on holiday. We are going at the end of the month and I'm not going to test.

Please think of the people who live in holiday areas. If you don't test and go merrily about your holiday you may be infecting hospitality workers, retail staff etc etc. Holiday places are definitely not immune from covid.

I was thinking about this , but we are flying to ours (scotland), so I can't imagine we could go back home - but again place is booked after us.

We don't have to test for domestic flights do we?

No I wouldn't think so - we definitely don't have to test for the ferry. I was thinking of bringing LFTs to test before we meet the relatives, who are vulnerable.
I don't think most people are doing regular tests are they? I'm used to doing them for work though.

(Obviously anyone should test with an actual symptom)