My question is not really about a visa per say, but about the length of time/times you can visit per year. I only visit for about 8-10 days 3 or 4 times a year, as this is less than the 90 day non visa entry, am I okay doing that? (UK passport)
TLDR : Answer Summary
As a UK passport holder, you can visit Thailand multiple times per year for short stays as long as your total time in the country does not exceed 90 days within a given period. The community consensus indicates that the frequency of your visits is less of a concern compared to the total duration of your stays. Therefore, if your cumulative time in Thailand remains around 40 days per year, you should not face any issues.
90 DAY REPORTING RESOURCES / SERVICES
- Use the trusted Thailand 90 Day Reporting Service to get your in-person report done and mailed to you for as low as 375 THB (even if the online system doesn't work for you).
 - For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.
 - Join the Thai Visa Advice Facebook Group to ask your questions, and get advice from others.