Anyone who suggests an annual growth rate of 5%, compounded, with no mention of charges or inflation, over 40 years, is being very disingenuous.
But even if someone retiring right now with a pension pot of £221k, will have (approx) an income little more than the NMW (NSP + Private Pension) will lose the WFP and not be able to access any form of pension benefits, even if still paying a mortgage or renting.
Its not a great deal of money.
Millions of workers wont retire with anything like a pot of £221k.