Is there a limit to the number of tourist visas issued to an individual in a single year?

Your question is a bit irrelevant in the current situation.

Since where would you like to apply for a new tourist visa?

Return back to your home country?

In Thailand you can only get extensions at the moment. And with this you can stretch it quite far, as long as they are giving the "allowance of stay due to covid" 60 day extensions

For a new tourist visa you need to get out of the country, and currently it is not as the older days that you hop to Malaysia to get a new tourist visa.

Malaysia is closed, Thailand is not easy to get in .. and if you would get in you have to quarantine on both sides atm, or embassies are not even giving the visas out.

Visa.. No limit.. Visit exempt is another thing.

Land borders are closed - not likely to open soon.. Air fly in has a lot of hoops to jump through. Where do to plan to fly to to get more TRs?

I am slightly confused when I was going regularly to Thailand purely as a tourist immigration told me it was not acceptable to use a visa exempt because of how many times I came.

I then got a OA non Imm visa in UK it’s now expired.

I plan to return in October if I go to a tourist visa is it likely because of the number of stamps in my passport I would get a problem.

My maximum stay Oct -Dec back Uk for Christmas January- early April.

Thanks for any advice.

No limit to TR visas issued per year.

Slightly related question - is there always TR visas? I mean pre-pandemic I always came visa exempt and didn’t even consider the need for a TR. I guess what I’m getting at is can we still come 2+1 month when things normalise?

I believe the law limits you to 6 months a year in Thailand as a tourist, but in practice it does not seemed to be enforcement.

2 TR visas a year, no problem at all.

No I believe you won't have a problem

No issue with your proposal