Britons get happier rather than grumpier with age, with our greatest contentment coming at 58.

A survey of 2000 people in the UK, commissioned to mark the launch of new handset the Samsung Galaxy Note 4 ,  suggests we finally manage to get the work-life balance right towards the end of our working lives as we hit a golden age of satisfaction when silver-haired.

The poll found the age associated with the greatest stress is 35 - as those of that age juggle the pressures of a young family with a demanding stage in their careers.

According to the survey, 58 is the age at which the highest proportion of people are happy with the balance of work and leisure, as well as feeling good about their lifestyle.

One-third said they were unhappy with their work-life balance.

The biggest key to contentment was spending time with family, according to 63 per cent of those who took part - while the second most important factor was doing a job they loved.

Professor Cary Cooper, from Lancaster University, said: "By the time we reach our 50s, we feel much more confident, allowing us to set the agenda when it comes to working hours and family life."