A couple from Bristol have become the oldest winners of the UK lottery, after scooping an £18m jackpot.

Speaking at a hotel in Gloucestershire on Tuesday as they announced their good fortune, Dennis Banfield, 87, became emotional as he tried to describe what the win meant to him. He added that he and his wife, Shirley, 83, will share their winnings with their daughters.

Banfield, who was in hospital over Christmas following an operation for a leg infection, said his daughters, Tina and Karen, would get more benefit from the money, but if he could help anyone else he would.

Shirley Banfield bought the family ticket at their local newsagent in Bristol, opting for one line of Lucky Dip numbers for the Lotto on Saturday night. Her husband said they found out they had won the following morning when she read out the numbers, commenting: “Who’d have those numbers?” He was able to say “I do”.

Speaking about what they might buy with the windfall, of £18,139,352, Shirley Banfield, who worked as a local government officer and as a shop assistant before her retirement, said they might replace their three-door Nissan Micra with something a little roomier but “not a Ferrari or a Maserati”.

She added that they might swap their three-bedroom house of 57 years for a bungalow but it would still have to have space for a workshop for her husband, a keen amateur carpenter.

The windfall will be split three ways, with each sister taking a third and the parents sharing theirs.