1) Maintain the ratio of working life to retired life by increasing retirement age in proportion to increased life expectancy. Which meant increasing retirement age to 67 by something like 2050.
2) Reduce the triple lock of pensions - which means the state pension rises by a minimum of either 2.5%, the rate of inflation or average earnings growth, whichever is largest - to a double lock, which only includes the latter two elements.
3) Means test the payment of winter fuel allowance, which is a yearly payment of about £300 made to everyone above a certain age, so that it would not be received by wealthy pensioners.
4) Put in place what was effectively an inheritance tax for payment of social care (i.e. care homes and in-home care) after death, which is currently both criminally underfunded and also massively expensive.
In combination, this is something like £15bn each year of extra spending now, rising to £50-70bn each year within the next 30 years.
All of these measures were opposed by Labour, and their most enthusiastic supporters are the young.