What visa should I choose if I plan to work in the UK but also want to spend time in Thailand?

Depends on how long you are staying in the UK, and how many trips and how long to Thailand. If you plan to stay in TH longer than 60 days at a time, then yes but if not just get a visa exempt stamp on every visit

I'm no expert but here's my take on it. If you qualify for the retirement extension on a non-O visa (over 50 and have 800,000 Baht in a Thai bank or bring in 65,000 Baht each month) then there is nothing stopping you from getting it. You only have to do the 90 day reporting while you are in Thailand and can come and go as you wish so long as you have a re-entry permit (single or multiple). I have friends that live about 6 months in UK and the other 6 months in Thailand and they are on the non-O visa retirement I also have a friend who used to return to Austrailia 4 or 5 times a year on the same non-O retirement and if you are intending to spend more than 180 days a year in Thailand then this is the right visa/extension. The only time you would HAVE to be in Thailand is when you renew it, you only do the 90 day when you say 90 days in thailand and it stops/resets as soon as you leave.

I am on my retirement Visa. I only do one 90 day report because I am in US for 6.5 months and 5.5 months in Thailand.

Can not work on a Retirement Visa

I am in a similar position to you and decided on the DTV, very straightforward, never in the country long enough for 90 day reporting yet so technical never needed the DTV but it’s a good security net incase I need it.

I have retirement visa and because of work have never had to do 90 day reporting

As I understand it you only do 90 day reporting if in the country

You don't have to do a 90-day report while you're not in Thailand. The 90-day clock only starts ticking when you're in the country consecutively. If you leave, the clock pauses and resets upon re-entry.

A Non O visa with an extension of stay and multiple re-entry permits works fine, but you’ll need to maintain 800,000 baht in a Thai bank account, at least during the first year or two.