Williams' job is to help passengers in need of assistance, whether due to mobility issues or, he explains, because the airport environment "can be really loud and very busy and very confusing".

"It can be a really stressful place so we try to help them have a good experience," Williams says.

"If you have a mobility issue, you may need a lift to get you up to the plane or assistance getting out on to the tarmac. You have to try to get people through to make sure they don't miss their flight.

"There are some great examples of management – prioritising the right passenger at the right time, making sure they have the right equipment. I have been so fortunate because Sergio is the master."

It came as something of a surprise to Williams that the photograph taken of him at work and then published on social media site X prompted so much interest.

There were numerous likes and shares followed by various headlines as an unusual story was picked up.

"I genuinely didn't think it would be that interesting to people but, if it is, that's fine and we can have a chat about it," Williams says.

"For me, this [interview] is a good opportunity to explain that I like working and I think this is a good way to add something to my actual trade, if you like.

"It's been a brilliant experience, but I think I am probably more cut out to be a football coach or a manager."

Had things been a little different, Williams might still be at Swansea and preparing for pre-season.

Having steered the club clear of relegation danger in the second half of 2023-24, Williams had Swansea within sight of the Championship play-offs - and playing good football - at the turn of this year.

Progress had been made despite upheaval behind the scenes and some questionable work in the transfer market.

But after a slump in form that nobody saw coming – and which coincided with a dispiriting January window – Williams lost his job amid concerns that Swansea may be dragged into a fight to stay up.

"There was lots of movement and changes and different things going on, a lot of turmoil during my time which was understandable," Williams says.

"But I look back very fondly. I loved my time at Swansea and learned so many things which I will take with me for my next job."

So when might Williams return to the touchline?

He is "ready to go at any time", whether it be as a head coach or assistant, but is adamant the club must be right.

"The things I have learned and the things that are valuable to me mean working somewhere that's in a good place and where people are pulling in the same direction," Williams says.

"Then I think I can help a football club to be successful. That's what's important to me."