I currently have around £34k in my pot, DH thinks he must have around £24k.
We get deducted around £7.5k every year, which would take us to around £250k by the time he retires, by the time I retire, we'd get at least another £30k. That doesn't take into account the investment piece around pensions, mine is in a mid risk "pot".
We'll be mortgage free in the next 5 years with a house worth £400k. The plan is then to buy a more expensive house (salaries allowing) and then downsize again, so we'll end up with at least another £300k in the bank.
To me that seems enough, but I don't know if I'm being unreasonable.