More than a quarter of British companies are set up by people aged 50-65 – with a higher success rate than any of their younger counterparts. But why are so many older 50s taking on challenges and starting new careers, when their parents rejoiced at the thought of retirement?

Reaching retirement age used to mean kicking back and cruising through later life. But rather than heading to the golf course, a growing number are staying in work. The US now has its highest number of elderly workers since the '60s as Seniors continue to clock in.

"We just don’t do old age like my mum and dad did," says 50-something director Sue Bourne. "This generation keeps working, they’re still active. It’s the beginning of a revolution in ageing." And from cosmetics to housing, it’s creating a new and profitable opportunity for entrepreneurs everywhere.

Some might believe that retirement for women in the UK means endless book groups, lunches out and a yearly cruise. But as women live longer than ever before, what does the future hold for these baby boomers who may have to fund more than three decades of being out of work?