Since joining The Wanted, the Abbeydale teen has made a number of celebrity fans... but some have come as quite a surprise.
The 18-year-old, who will perform at Gloucester Rugby's ground with The Wanted later this month, said: "Someone I didn't really expect to meet was Bill Nighy. He is an absolute legend.
"We were at this charity event and they asked us to do Christmas songs so we did White Christmas acapella. We were halfway through when I looked over and saw him and I froze.
"I told the other boys and we got really star struck, halfway through singing acapella which was not so good. He said he was a bit of a fan which was great.
"Rihanna is lovely – but she is massive though, really tall. I felt tiny compared to her but she is a right laugh. We met her on the X Factor."
Nathan also said one of his favourite memories was performing in front of thousands of screaming girls.
He said: "Another moment we are chuffed to bits about is when we gatecrashed Justin Bieber's gig and we went on stage before him.
"We got a call from his manager and he said would we do a few tracks and we did.
"We were chuffed to bits and it was a really great gig.
"Bieber is really nice, not like the cheesy kid everyone thinks he is. I can call him a kid because I am 18 now and he is 17! But I am still a kid at heart."
Nathan, a former Longlevens Junior School pupil, said there is lots in store for the band.
He said: "We have been confirmed to do V Festival which I am chuffed to bits about and I am pretty sure we will do a tour following the next album. So dates will probably be announced in October or November.
"We are just concentrating on the next album and writing some great tracks. Throughout the year we are doing lots of live shows."
Nathan and bandmates Max George, Jay McGuiness, Tom Parker and Siva Kaneswaran will perform at Kingsholm on May 29.
Boyband Twenty Twenty and soul singer Dionne Bromfield, who is Amy Winehouse's goddaughter, have been confirmed as support acts for the gig.
Nathan added: "We hope people come out. We will be the first band to do a concert at Kingsholm so it is a bit of an event in Gloucester.
"Even if you are not really into us we have lots of bands playing that day, not just us.
"We have some great support bands and so it should be a really chilled out day and then a bit mental when we go on stage.
"We just want to get lots of people down there."