Hugh Grant reveals that fatherhood has made him emotional, Tina Fey says she is a better actor when no one can see her, Amy Adams talks about her motherly approach to producing, Nigella Lawson says she went a little more feral during lockdown, Romesh Ranganathan reveals his clean-shaven self, and Dua Lipa performs live in the studio.

Hugh Grant, talking about his hit TV series The Undoing, says, "It's so hard to talk about because there are so many precipices and I don't want to give anything away. But I can say I'm not the nice husband of Nicole Kidman that I have pretended to be."

Asked about being emotional during the shoot, he says, "Having spent a career unable to muster a single emotion, I find in my old age I can't stop them. It's something to do with children or love, or my wife, or something, but I can't keep it at bay.

"I did this job partly to get away from my young children as they are exhausting at my age. I thought it would be great to have a break but every time I arrived in New York I missed them so badly I was a mess, so every scene was suddenly a cue for tears for me. I'd even go into a cafe and ask for a cup of coffee and the tears would come!"

Talking about having COVID, he says, "I got it and I was very brave and manly about it! I got it right back at the beginning - I actually didn't know what it was. It felt like mild flu and then a rather alarming complete loss of smell, which culminated in me sticking my head in dustbins sniffing, thinking, 'There must be something here' and spraying myself in the face with my wife's Chanel No.5 but smelt nothing."

Asked by Nigella Lawson, if his loss of smell stopped him being interested in eating, he says, "I've never been interested in eating is the truth. It was a little dull, but then I was cooking because it was lockdown and it was never going to be delicious! I cooked every single night for four months and it was a baked potato. That was it!"

Tina Fey joins Graham from Manhattan for a chat about her new Pixar animation Soul. Talking about the movie, which also features Graham voicing a character for the first time, she says, "It's nice to be in something that my kids can see. They loved it. My little one was completely on board with the concept from the first time she saw an early cut. I guess they are closer to, or remember, what happened before (birth)."

Asked if she still enjoys doing voice work, she says "It is so freeing, and you don't have to spend any time worrying what you look like because they are going to make you look cute. I am a much better actor when no one can see me!"

Amy Adams, joining Graham from LA, says of her new film Hillbilly Elegy, "I am really intimidated to meet the people I play especially when you are dealing with really trying periods in their lives. Beverley wasn't a great mother but she's actually a lot of fun and she's really brave. I believe she has seen the film, but I haven't heard her thoughts on it, or my portrayal of her but I believe she is okay with it."

Talking about getting into character, she says, "I wore a prosthetic nose and an amazing wig. My wigs always end up with names and I like to talk to them. Beverley's wig became 'The Beaver'. It was about 103 degrees in Atlanta and I had a very hot animal sitting on my head during the shoot!"

Asked about working as a producer, she says, "I am strict - compassionate but firm. It's like when someone gives you an idea that you will not be going with, I use my mum voice to say, 'That's a really nice direction to go but I think we might want to move off that topic now!' It's okay when I do it and most people are pretty patient with me but started using that tone during lockdown with my husband and I am learning that it's not going down well!"

Nigella Lawson, talking about her new book Cook Eat Repeat says, "I wanted to write about what a recipe is and how people both understand or misunderstand what cooking is and I wanted to say that food has this amazing power to change the tenor of the day. During lockdown the evening meal became a huge focus for many people - it gave a structured distraction."

Talking about how she coped during the first lockdown, she says, "I felt a bit distracted and dazed at the beginning - it was quite odd, but I had a book to write so I was busy. I was completely isolated, I didn't see anyone or go anywhere, but I liked it."

Asked if she went a little feral, she says, "I am always a bit feral - this is only the second time I have worn shoes since March! I got up early and went to bed early. I rather liked it." Adding, "Actually I've worked from home since I was 27, so I've not got dressed for decades unless I am working, so I have many all in one romper suits! I've actually just been looking at Christmas pyjamas to wear in the daytime. My postman has never seen me dressed!"

Romesh Ranganathan, explaining his new clean-shaven look, says, "I'm doing a show with Rob Beckett about drag, looking at the whole culture and art of it. As part of that we are developing our own drag act so a few days ago we had a go at getting our look. I committed to it properly and shaved my beard off and I regret it hugely because before I had a sort of hipster beard and now, I look like I work for Google!"

Asked what his drag name is, he says, "Based on how I look, 'Mum' because I look just like her, which is a little bit horrifying!"

Talking about his new book, As Good As It Gets: Life Lessons from a Reluctant Adult, Romesh says, "I started writing it because of the of number self-help books I was seeing but most were written by people that seemed have it nailed and are on top of things. This is very much an inspirational book because you will read it and you'll think 'I'm really glad I'm not him!'"

Dua Lipa performs Levitating, live in the studio before joining Graham for a chat about her new album. Talking about the success of Don't Start Now, she says, "I wasn't sure what people would think of it, but I am so happy about the reaction."

And finally, Graham pulls the lever on Romesh who volunteers to sit in the Red Chair on behalf of audience members telling their funniest stories from the comfort of their own home.