There are certainly places with very limited services! As for roomy houses, though, that is much harder to find. I did a little searching and found a UK govt report on housing sizes [1]. For a point of comparison, average house size broken out by house type is smaller for all types than the average across all house types for Missouri [2; taken as a random exemplar of the Midwest]. Only when we break out to detached houses built in particular time periods (p.18) does the average become roughly equal to Missouri, and remember this is across all housing in Missouri (IIUC).
The UK settlement pattern is quite weird. About 1/6 of the population lives within the South-East, which is roughly the area commutable to London by train. Then another 1/6 of the population lives in London. So land is very expensive there. The rest of the UK is on average a lot poorer. So the UK in general is not conducive to large housing. You can certainly find old farm houses out in the sticks, and small villages that are mostly expensive large houses. These are a tiny fraction of the housing, though. I believe UK houses are on average the smallest in Europe. (I think the UK would benefit a lot from some decentralisation, but that's a different topic. Side eye in cancelled HS2 lines.)
The UK settlement pattern is quite weird. About 1/6 of the population lives within the South-East, which is roughly the area commutable to London by train. Then another 1/6 of the population lives in London. So land is very expensive there. The rest of the UK is on average a lot poorer. So the UK in general is not conducive to large housing. You can certainly find old farm houses out in the sticks, and small villages that are mostly expensive large houses. These are a tiny fraction of the housing, though. I believe UK houses are on average the smallest in Europe. (I think the UK would benefit a lot from some decentralisation, but that's a different topic. Side eye in cancelled HS2 lines.)
[1]: https://assets.publishing.service.gov.uk/government/uploads/...
[2]: https://fred.stlouisfed.org/series/MEDSQUFEEMO