Thanks a lot for highlighting the alternatives. Based on past experience with Valiant (with a stove fan in this case), if not too far off the price of alternatives, I would recommend going for it as it was a completely different class to the two other models I had (but time will tell here).
Thanks for highlighting pollution minimisation OP. Props to you.
Or this... https://www.amazon.co.uk/dp/B078GSDB3L/
Surely the filter on this is going to need cleaning almost every time you use it?
No reviews on that one though. I wonder if this might be a better option for less money and with good reviews... https://www.amazon.co.uk/gp/aw/d/B075XPKPX9/ref=sspa_mw_detail_0?ie=UTF8&psc=1