@sarajw Interesting, thanks! Going to try to find a good one this weekend and give it a go. We do have a sun shade to install too but it's not long enough to cover the entire side, so we'll place that in one corner to take the edge off where we film things.
All the other windows in this place have shutters which we do use, it's just this conservatory space which we've turned into the office that's been a problem.
Should only be for a year or so, then we hope to move to Northern'ish Sweden 😊