“But someone has now suggested that because he took some as a lump sum upon retirement that she might be entitled to nothing.”
OK, who is this “someone”? I can’t tell whether you’re getting worried about comments from someone who may be in a position to face valid info, or just some random in the pub!
This Ofgem questionnaire is useful for EDF as it details several different schemes historically within in. For most though, lump sum and spousal on death are pretty similar - maximum lump sum would have been 25% and it’s only the remaining pension where the spouse gets 50%.
https://www.ofgem.gov.uk/sites/default/files/docs/2009/07/ofgem_db_pension_questionnaire---esps.pdf
But where has this lump sum comment come from - someone who knew him?
There was a period when people were transferring out of Final Salary pensions - basically, the pension administrator gave them a cash settlement, nothing more due. For some people it was a bad decision, for others it was a gift - and at one point the transfer values were extremely generous!
If your dad did this, there would be nothing due to your mum - he’d no longer be in the EDF pension. Who should though, have a massive bank balance! (hopefully not burned through!)
This could actually be one of the scenarios where is was a good decision - she’d get the lot, not 50% (albeit 50% of a DB scheme).
I couldn’t find anything quickly on line about EDF transfers out, but I did find one compensation firm fishing for EDFers - so, I guess it was possible.
Is it possible that your dad did this?
Or that the “someone” wrongly thinks they did?
It’s not a “lump sum” in pensions terminology, but in casual speech I’m sure some would describe it thus.
A lot of people did, though I think it’s about 10 years since it was at its peak - it’s quite hard to get authorisation for it now.
Your dad might still have had a monthly income depending on how he managed the money, if he did do a transfer out. The quickest way to check if he was still a member of EDF scheme would be name on statement of incoming monthly payment.
The administrator should very quickly see if he transferred out, too.