As you're in the Midlands, I'd recommend Heritage House for a survey. It's Pete Ward's own company and you may even get the man himself visiting! https://www.heritage-survey.org/
I would say, like many surveys, they will flag a long list of things that are risks and it can be hard to separate what actually needs doing ASAP, and what you can do in future and what doesn't need anything other than keeping an eye on. It was a useful exercise, but you will still need to become an expert in old properties and ultimately make your own decisions.
With a timber frame home like that, be prepared to be scared. There will probably be a lot of timbers that may need repairs or replacing, the question is do they need replacing urgently, or in 50 years. Ultimately, it depends how much money you want to throw at it and how smart you want the place to look.
I would say, judging by those windows and doors, expect it to be cold and breezy. As you may know, the problem with a lot of old properties is they assumed there was a roaring fire or hearth going all day to heat the place. I don't know what the rules are for having a log burner in a thatched cottage. Achieving the equivalent conditions with modern heating will cost a small fortune and trying to improve matters with insulation can lead to more problems if not done correctly. Also, some options may not be be on the table, such as improving the windows.
We're about to replace one window similar size to the upstairs in the photo. £7k for a metal equivalent! At least it's double glazed though.
On the other hand, looks like a fun project. Good luck