The OBR revised up its public debt forecast in 2075 from 270 per cent as a share of GDP to 300 per cent due to higher pension spending.

The OBR revised up its public debt forecast in 2075 from 270 per cent as a share of GDP to 300 per cent due to higher pension spending.

Forecaster says curtailing rising costs such as health and pensions ‘are today’s challenge, not just tomorrow’s’

Under the triple lock, the UK’s state pension rises each year by whichever is highest out of inflation, wage growth or 2.5%.

The Office for Budget Responsibility has warned an ageing population could contribute to the UK's national debt tripling over the next 50 years

The UK has experienced one of the largest increases in government debt of any advanced economy over the past 20 years, the OBR said