Creeping Thyme between paving.

King Charles has a thyme walk at Highgrove, so you would be in good company.

I wouldn’t trim it. It will spread as far as it wants and during its flowering period will be a hive of activity. Thymes are one of the easiest bee friendly plants to grow. I have quite a few in my gravel garden and Japanese garden - where it is planted in place of moss because of the dry conditions.

I am at the moment planning a drought tolerant bed and it will definitely incorporate thyme as well as lavender etc.

Thank you. The cement between the slabs has cracked up and will be costly to repair again. I guess I will have to keep it trimmed.

Personally l think it looks nice and will give a nice scent when you walk over it. However, it could possibly destroy the cement between the slabs, will let water in and make the slabs uneven.
I have self sown plants between my pavers in the courtyard, but the pavers are well bedded in and I occasionally clean the plants out between the gaps.