[user104658]

I very much doubt state pension will exist at all by the time I'm in my 60's at this rate, so I'm not planning to rely on it anyway.

In principle I have nothing against people who enjoy their careers working for as long as they can, but frankly, having people work in cruddy retail / manual jobs into their 70's is ridiculous. Bad for their health AND bad for the economy as both physical and mental productivity begins to drop.

I'm going to bring brutally honest. The company I work for has far too many in the 55+ age bracket still in shops, who have been with the company 20 or 30 years, and frankly 95% of them are utterly useless at the job as it is now. A liability. They're too slow, they make cash errors, and they don't understand modern systems.