Office chair recommendations please

[dumdedumpop]

Our backs are starting to suffer so DH and I need decent chairs for WFH. Max spend £150 each.
DH is looking at gaming chairs as he and DS share the PC for gaming (ds) and work (DH), but a bit of research suggests DH would need to compromise quite a bit on "ergonomic " features.
Suggestions gratefully received

I have this one:
www.mikeodwyerofficefurniture.co.uk/operator-office-chairs/15-t550-high-back-premium-operators-chair.html

I added the tilt & slide options (but no arms) so it came a bit over your budget. Lots of others you could look at though.

I got an Orangebox Do chair refurbished or second hand, I can't remember, from Ebay (£140?). It was in as-new condition and it's incredibly comfortable for 8-9 hour days at a desk.

www.ebay.co.uk/itm/363182408233 I can't remember if it was from this firm but it looks like this

Have a look at Office Monster. Lots of choice. I would recommend adjustable arms and if possible the lumbar support bit that moves with you - it's worth it.