It was not until the following week that the kitchen manager told his daughters, aged 20 and 22.
Speaking during a National Lottery news conference, he said he had booked a trip to the Gambia – where he was born – to visit family and was looking to change his rented one-bedroom flat for a four-bedroom house.
He received the money on Tuesday and is now planning to complete his driving test and buy his first car.
“I have never started lessons. I have had my provisional driving licence since 2009 but I have never been able to afford to have a car or lessons,” he said.
“At the moment I just want to get a simple Peugeot and then I will get a BMW X6. I want to start an intensive course by next week.”
Mr Gillen has worked at the pub for five years following an apprenticeship with McDonald’s.