TC - I'm not saying this to have a go. I'm just wondering if you have consider the following?
Have you added up how much LESS will be paid into your pot by leaving early
And offset this against how much extra you gain by leaving the scheme early?
How long are you expecting to live? How long are they expecting you to live?
How much more able are you to do things at 60 versus 67?
And don't forget your earnings each year will still rise in accordance with whatever the scheme is indexed lined too. In any event at the moment it's certainly better than the 1% cap on your wage increase.
So it might not be as bad as you think. What would be a good idea is if the scheme forecast pension annual summary actually reflected the fact that you may stop working aged 60. Then it wouldn't come as quite a shock to folk.