The inheritance
Two hundred thousand pounds lands in Ruth's account at sixty-two and everybody has an opinion: clear the mortgage, top up the pension, fill the ISA. The same woman and the same money, planned three ways, to see which advice was worth taking.
Give up as much salary as the pension can take for the five years to sixty-seven, and live on the inheritance while you do.
Try this planPay the outstanding balance off the month the money lands, then let the freed payment build up.
Try this planShelter what the yearly limit allows and hold the rest in a general investment account until it can follow.
Try this planLiving on the inheritance and sending the salary to the pension instead leaves Ruth ~£185.4k better off than paying the mortgage off with it.
Filling the ISA is the other thing everybody suggests, and routing the money through the pension leaves Ruth ~£195k ahead of that too.