Commode chair with Porta loo. (Clapham MK41)

Wooden chair with solid removable seat.
Within this sits a Porta Potty toilet that holds flush liquid and waste tank.
Ideal for at night if person unable to or unsafe to get to bathroom.
Waste tank can be emptied every day or so.
Doesn’t smell between uses.
Doesn’t look like a normal commode chair.
Quite heavy frame. Not on wheels .
Clean but previously used condition.
Small amount of fluid remains and instructions for usage.
Size seat 49cm high, chair 59cm wide and 48cm deep.
Collection Clapham,this is not at our address.
Collection weekend probably