I like the fact you can get there easily, you can set off when you’re ready and take your home comforts.
We stay in a nice holiday cottage so it’s good to be somewhere luxurious and clutter-free. I’ve seen a few threads about doing housework etc and we find if we were to stay at home and do day trips we’d end up doing housework or DIY.
I like the country pubs, I’ve never found anywhere comparable abroad. And sad as it seems, having a kids menu on offer is a selling point.
Generally museums are free or cheaper than those abroad, I’ve found.
If you go for a coffee you can relax in a cosy chair with a long drink rather than an expresso stood up at a bar or in a piazza where the staff take ages to serve you.
I love eating abroad, but over here I’d have fish and chips, a roast dinner, a cream tea and a good cheeseboard. Also there would be a nice curry house.
I get a supermarket delivery full of easy to prepare goodies and ice creams/lollies. I usually identify about 3-4 things to do (and book into now) in advance. Some of these are free, some are expensive but having paid for them before makes it not feel as expensive.
Study the weather forecast obsessively, including wind direction. Identify the dry part of the day and go out then, even for a bit. Write off the washout days and play games, read books and watch TV.
If it’s nice weather then it just feels nicer and positive in the UK, as it’s such a bonus. I like how if it’s sunny here you can generally always sit out in it without having to seek shade.
I realise the things I’ve said are things that I could do from home but it just wouldn’t feel like a holiday to me. I have young children so I’m happy with the idea of a change of scenery for a week, and I do prefer the British landscape to most arid Mediterranean areas.