Question Author
:-)
Thank Peter, but I think I'll need to analyse your explanation later today to clarify what the situation really is.
If, as you suggest, adding those 3 figures together, is incorrect, then there is an interesting coincidence. By doing so I get the same figure they use as the annual pension if one takes all as pension and none as lump sum.
I'm trying to advise, but I'm unsure I've explained it correctly to her at present, as this annual pension figure seems way above what investment of the deferred pension could produce pa.