Anyway....my pension plan was/is far superior to anything I've read here.
Go on, remind me how she is a bloody lucky woman to have you 
I'm sure you don't need reminding 
.
The most lucky thing is surviving long enough to claim it & then living long enough to enjoy it, certainly don't rely on the state pension, the age for taking it is going to go well into the seventies eventually.
Government has given assurances that no change will be implemented without at least 10 years warning for those affected - due in part to the WASPI fuss. So anyone older than 57 at present is probably safe. There is a long standing principle that no govt can be bound by a previous govt's promises though, so in theory it could change, but personally I think the risk is very, very low.
The SP Age is currently intended to rise to 68 from 2044, but that date could change because obviously it's more than 10 years away. I don't think the legislation for this has passed through parliament yet though. Any change to current plans would likely be due to some 'review' of pensions, and since the current Govt has shown no inclination to do one I think the current arrangements will stand. Therefore if you were born before 1977 your SP age is currently 67.
Tampering with SP entitlements and ages is a political nuclear bomb, and no govt is going to do it unless they are forced into a corner. Much more likely to just launch a review, which won't report for several years.
Current male life expectancy at birth is 79.1 years, so on average you'll be drawing your SP for 12 years. Interestingly, the male life expectancy at 67 is 84-85 years. So if you make it to 67, statistically you'll likely be drawing your SP for 17-18 years.