Wife, no kids, only my salary. Company accommo, one car from the EK car loan. No other debts in Dubai, small CC bill from home and a mortgage that is serviced by our tenants.
We choose very carefully where we eat out and go to the pub, otherwise you can pay double central London prices as a bare minimum. Shop around and you can go a bit cheaper. Depends what you're looking for. Beer & wine usually bought downroute. Several holidays/mini-breaks per year. Still save £2k/month. Different story here with children, especially as an FO. We could probably save more but don't want to be miserable!
Best tip: supermarket shop wisely in Dubai. Ignore Spinneys & Waitrose (think Harrods food hall on an Aldi budget), consider Kibsons online delivery. Choithrams, Carrefour, Union Co-op & Lulu are relatively reasonable.