That was the decision facing me. Interest rates were at 10% on instant accounts, so it was a no-brainer to take the equivalent of four years pension up front and put it all in my wife's name, as she only had a pocket money job. Judicious switching of 30 Grand from account to account ensured that she never paid any tax on the interest, and ensured that we were frequently invited in to "see the manager". Halcyon days, thanks to Thatcher's runaway inflation. :)
The other important factor was that the widow's pension which my wife would have received was not reduced by my taking the lump sum.
The Company paid for two half hour sessions with a F/A for each retiree, and he admitted that he would receive commission on the investment he suggested to me. I asked him what it would cost me to consult him independently in the future and he told me £200/ hour, this was in 1991.
Well my income is from the modest Company FS pension, and a very useful slice of SERPS on top of the state pension. I got rid of the few shares I held at age 65, and gradually slid my savings into ISAs. Crap interest rates now, so some were transferred into fixed rate ISAs.
Some improved rates seem to be emerging now as April looms.