You monthly take home is £10,330.
You should rent a nice family house for £1,500.
You should shop at Waitrose and allow £800 for food; household bills allow £500 and travel £500 per month.
With the remaining £7,300 per month you should spend this on holidays, clothes and little luxuries.
If you are still feeling quite hard up it would be helpful to move to an area where you will be surrouonded by people on a tiny fraction of your income.