Well I must be way below average, then. (Bring on the sad violins.)
I've gone from £35K twelve years ago, when I had full use of a company vehicle, expenses, tools, work wear, laptop, etc., and then I had no choice but to retire prematurely, down to £10K currently comprised of state pension, company pension (reduced because of the early retirement) and a small top-up pension (also reduced). And a London travel pass.
But I am supported by my self employed wife, without whom I would be in dire straits. While all my income goes into a joint account towards bills and food, a fixed amount is transferred monthly into my personal account, and I use that wisely, there's no splashing it out on things like coffees and lottery tickets and frivolous purchases, that way I can afford to buy things like decent walking gear, as an example.
The biggest hardship is that I can only just about afford to run my 11 years-old car. The cost of road tax, MOT, insurance and parking permit is near crippling, while I never reckoned on how much the price of petrol was going to increase since I got it.