This leather faced swivel chair has gas lift and fixed lumber support with an adjustable seat. The chair can also be moved forward and backwards.
Saw this in my local Tesco, reduced to clear from £34.97. Not as good a deal as when they were available for £11.50 online, but thought it worth posting anyway.
Currently £30 online.
'Go To Deal' won't work cos it's in store only - just selected Tesco.com as the merchant as it seemed like the closest fit!