I'm in agreement with the above...... with a couple of thoughts to add.
First, Jamie wouldn't necessarily be trailering it up the road, because I'd (hopefully) already be driving it home
Okay, being serious, we can't check the MOT history as the index plate isn't clearly visible.... it's H567---, but Google only gives me a silver and a pac blue with that combination, so it isn't one which has appeared for sale for a fair while.... which backs up the description of long-term ownership.
I have no worries on the general 'usability' of the car, or the high mileage - if it was a daily driver, it has been maintained, so the 'wear and tear' is likely to be down to what you can see.
The drivers seat needs work (as stated), but if the actual leather is okay, you can DIY it. The bodywork looks good in the pics, but will need some work according to advertiser...... rear window may well be repairable, or certainly replaceable without doing the whole roof....... I wouldn't worry about it as I don't drive with it up, and it lives in a garage, so for the really odd time I need it, gaffer tape will keep it together.
My only real concern is for the front wishbones (and anything similar on rear wishbones). A car that has been used as a daily driver will have seen all kinds of weather, sot he wishbones may well be good, or they may be completely shot (or somewhere in between). If it needs upper wishbones, they are easy to get - lower control arms not so much! At the back, the SE wishbones will be mild steel, and will probably be past there best after 30 odd years. Easily replaceable, but not cheap to get.
Without access to MOT history I can't see if the wishbones were an advisory or not.
At £4k it could be a perfect 'rolling restoration' to get you on the road with a big smile for this Summer, then set about some more serious work next Winter (if needed, which it may not).
If you 'need' wishbones, they will cost you IRO £500 a corner for the 'lowers', and £200 for the uppers. Add in new bushes, balljoints etc etc as found. Many 'needed' items can be salvaged by a good fabricator/welder - but I have also seen some held together with 'hope & chewing gum' which should have been in the bin years ago.
Basically, if I wanted a new project, I'd have it (unseen). If I wanted an 'entry level' usable car I'd be asking the questions of the owner to see exactly what I'm looking at. But if I specifically wanted a Yellow one, I'd be in my car going for a look.