Hit sitcom Only Child returns for a second series on Monday 4th May at 10:30pm on BBC Scotland and BBC iPlayer, and Wednesday 6th May on BBC One at 9:30pm. Read interviews with the two stars Greg McHugh and Gregor Fisher below.

Gregor Fisher (Ken Pritchard):

Gregor Fisher reprises his role as Ken Pritchard for a second series of Only Child. A beloved figure in Scottish comedy, Gregor brings his trademark wit and warmth to Ken – a man navigating memory, mischief and modern life.

● The first series was incredibly well received - how was the reaction to the series for you?

Series one was great. I enjoyed it mainly because when you become an old boy, which I am, it's quite nice to be required, and if somebody asks you to come along and do something, it's a very pleasant exercise. One of the great joys of filming Only Child is that a lot of the filming is 10 minutes away from where I live, which means a very late call. I get a long lie-in in the morning and then off I go to play silly buggers with Greg McHugh - so what is not to like?

● I must say Ken looks very trim in this series - what inspired his new look?

The inspiration is that the doctor said I was too fat. She didn't actually say that, but she said “You’re prediabetic Mr Fisher” and I said “Am I really?” and she said, “You’re not just prediabetic, you’re just a bit tipped over.”

I used to live in France for about 12 years, and my French doctor had the cheek and impertinence to say, ‘you need to lose weight’ and all the rest of it. When I came back to Britain, I think the way that they judge these things is slightly different. My doctor here said, “I think you are over the line for diabetes” and my papa, the chap that adopted me, fell foul of the diabetes and had various limbs removed. I thought, I don’t want to have any limbs removed because I am diabetic, so I better do something about it.

My downfall was that I discovered beer in France in a big way, and at a certain point, my wife and I would drink beer and eat crisps, which was terrible, and we just blew up. So, I don't eat crisps or drink beer anymore.

● Where do we find Ken at the start of series 2?

I think in a coffin. He’s much the same but a little bit older and a little bit thinner.

● Ken was still grieving his beloved wife in series one, something that so many people can relate to. He will obviously never not love Jean, but is there a glimmer of hope in him meeting someone else?

Yes, there is a glimmer. There is a glimmer, but whether it goes anywhere, you will need to wait and see. It's a kind of mutual glimmer going on. Who would have thought it?

● What kind of situations do we find Ken in this series?

Ken doesn't realise that how he behaves sometimes is utterly ridiculous and sometimes stupid - but in some way comic. He doesn’t really have a grip on some things, and he behaves like a lot of older people behave, me included, when he confronts what the younger generation think to be a very ordinary situation like dealing with a QR code to get on a train rather than a ticket, or dealing with the bank.

The bank is an absolute mystery to me, and an absolute mystery to lots of people of my generation. That's why at my local bank, there is always a queue of these old people saying, ‘What is this about?’ ‘You sent me this.’ ‘I can't get into my phone.’

‘This has been locked out.’ It’s like a pensioners’ meeting in my local bank, so that everybody can get sorted and back online.

● How would you describe Ken and Richard’s relationship this time round?

It’s much the same as the last time round actually. There are two people who have been forced to share their lives together again, and sometimes that's difficult, and sometimes the new doesn't sort of dovetail with the old. But that's the whole point of the thing, that’s what happens nowadays.

Lots of my friends have been in similar situations. In fact, I'm about to have some youngsters at home as my children are coming to live with me. I've got one of them living with me now, albeit temporarily, but my daughter and son in law are pitching up because they've sold their flat, and so they're coming to live with us. I think my daughter said, six months to a year, dad, not too long.

Everybody will have to make concessions, and I think that's what Richard does. The bottom line is, I think that they still care about each other, and dare we mention the ‘love’ word, but I think they probably love each other as well.

● How was it reuniting with Greg McHugh for another series?

Hellish. He's a pain in the neck, and I dislike working with him enormously. Of course I am joking - it's lovely, I enjoy working with the boy, and I hope to God that he likes working with me. He said he does. It’s a tough schedule, nowadays you don’t get very long to shoot a television show, but we have a very good time making it, so what’s not to like?

● What has the overall atmosphere been like on set?

It's very nice, it's painless. When I sense a hellish place and there's tension and all that, there's no worse place in the world to be, and I have been on a few sets in my time, a bit like that, where people's egos get in the way, and there's some producer shouting all over the place, and it's a nasty thing. But it’s nothing like that on this set, I think probably because it is created by the woman at the top, Ursula, who's our producer, and actually everybody else on it who are great. We have a crew that has been round the block many times. We've got great guys on sound, we had a lovely American cameraman this time, and all the kids who are working on it are such fun but also have such a professionalism about them. It's a real team sport. Everybody, without exception, plays their part beautifully and all the jigsaw comes together.

That’s actually quite an unreal thing, as that’s not common believe me. It’s a lovely set to be on.

● What do you enjoy the most about playing Ken?

It’s not even so much one specific thing about Ken, I enjoy my time with the boy. When you work with people and it all kind of dovetails, that's a reason to get up in the morning. I enjoy working with them all.

● What can viewers expect from the new series?

Well, there are some great new characters that join us. I knew Clive [Russell] from old times, so it was great to work with him again.

● Why do you think audiences connect with Only Child?

I suspect it's because there's a lot of old people out there living much longer than people used to live, and I think the Only Child storyline represents what's happening to a lot of people up and down the length of the land. They're having to look after the old folk, who are maybe not as able as they were, and they recognise that, so it is very relatable.

● Finally, how would you sum the series up in one line?

It’s bittersweet and funny.

Read an interview with Greg McHugh here.