Hi,
I'd say the first part of your evaluations will be to work out what your combined net income per month is going to be. 'Generally' speaking, the 'Teaching' profession isn't regarded as a highly paid career choice, but I do of course understand that there are more higher pay levels etc for which you currently may be at or working towards etc.
Practically though, as your move date is close, you'll need to start those net income evaluations asap, and then compare your 'lifestyle' as a family and then begin to look at areas, towns, cities etc which you feel can match what you'd like to maintain your preferred level of lifestyle choices.
Once you perhaps make a shortlist of suitable areas, towns and cities, you can look for more focused opinion and then cross reference that with independent reviews of areas etc to do with the aspects of life you want/like.
You'll hear positives and negatives for every single town and city in the UK - just like any other place on the planet - you just have to see which ones suit you better than others!
Cheers, DtM! West London & Slough, UK!