moved to a windowless room in the office that's just been painted and had new carpets

ohreally

dickydonkin wrote: »

I'm unsure if space is an issue with the OP

Perhaps, she refers to being located in an old cupboard


Looking beyond the regs, the ACoP guidance notes inform "The fresh-air supply rate should not normally fall below 5 to 8 litres per second, per occupant".

In terms of work space....

In most workplaces 11 cubic metres (11 m3) of space per person should be taken as a minimum. This calculation should not take into account ceiling heights in excess of 3 m. A space of 11 m3 per person may be insufficient if much of the space is taken up with furnishing or equipment.

In a typical room, where the ceiling is 2.4 m high, a floor area of 4.6 m2
(for example 2.0 x 2.3 m) will be needed to provide a space of 11 m3. Where the ceiling is 3.0 m high or higher, the minimum floor area will be 3.7 m2 (for example 2.0 x 1.85 m).

Every workstation shall be so arranged that it is suitable both for any
person at work in the workplace who is likely to work at that workstation and for
any work of the undertaking which is likely to be done there.