Yes, I should have looked at the COPE link at the bottom of the page where it says £67.50.
It seems they are saying that your workplace pension is supposed to cover the shortfall in your state pension but it is a bit vague about it.
However, since I intend to continue paying NI, every year I pay non-contracted out NI after 2016 adds another £4.45 to my state pension so at age 56 (now) if I keep working to age 68 then my state pension should be increased by £53.40 so I won't be far off the full amount if and when I get there!