Finn arrived in the village with James and Pete after his father, James, lost their own farm in December 2013. He used to live with his aunt Moira Barton and her husband Cain Dingle, along with his father and three brothers. Now he lives with his mother and two brothers at Dale View
Finn has recently finished a three-year Economics degree at university. In January 2014, he started work as a cleaner at The Grange, but instantly took a dislike to the job. After initially trying to get the sack, he began to develop a strong relationship with both Val and Eric and grew to tolerate working there, but aimed to save to move to Japan for a career in teaching.
In late May 2014 he dates with a man called Simon. They meet up in the pub when Finn said at the bus stop. Whilst in the pub the two kiss. Finn tells him he would love to go with Simon but he couldn't. In Simon's car they kiss again.
Having no memory of his mother, Emma Barton, due to her walking out following an argument with James when he was a baby, Finn found himself with unanswered questions on his birthday in June 2014 when he and Victoria found videos of him and his brothers, Pete and Ross as kids. Showing the videos at Finn's birthday party, Finn and his guests were horrified to discover the footage switching to an argument between James and Emma about James's affair with his brother John's wife, Moira Dingle. Realising there were more skeletons in the closet, Finn realised that Moira and James' night together had brought him a half brother - Adam Barton, who was also James' son. Later after drowning his sorrows with a bottle of vodka, Finn frets that he can't go home to Pete acting like everything's normal when it's not. He panics that he doesn't know who he is and that his mum is the only person that can help him see sense, which makes him sick.
In late July 2014 he dates with a bloke called Brad. Whilst Finn goes to the bathroom, Brad spikes a drug into his drink. Afterwards Finn, feeling woozy, starts reacting to the drug. When he and Brad get in the car, Finn nearly collapses but Brad helps him inside the car and drives him to a barn. Brad switches the engine off, wipes his fingerprints off the car, and finally starts the engine. He leaves an unconscious Finn in the car, but smashes Cain's car window to alert them. Later Pete and Cain hear the engine and they open the barn up to find an unconscious Finn still in the front seat. They drag him out of the car and Pete and Cain take Finn to hospital. Cain phones James and he arrives at the hospital with Moira, Chas, Victoria and the Barton boys. Ross who believes Finn tried to kill himself, tells James he will never forgive him if his little brother, who he deeply cares for doesn't wake up. With James by his side Finn wakes up and James tells Finn that everything is going to be alright. Finn tells his father and brothers that he and Brad were at the pub and then they went back to the B&B. Finn apologises to his father and brothers and James tells him that traces of a common date rape drug were found in his system. Finn panics, fearing that Brad raped him. He frets that he wasn't told why he ended up in hospital only knowing it was for carbon monoxide poisoning. James tells him that the car he was found in was stolen. Later Finn is examined and he asks Victoria to stay by his side. Victoria in an effort to take his mind away from the check-up tells him to think of 5 of the worst things Val said at the Grange. Later the doctor tells Finn that he wasn't raped.
Finn comes home the next day. Ross discovers that Gary North ordered Brad to put Finn in hospital. Finn tells Ross that Brad locked him in a barn and tried to kill him, and that Pete's worried sick thinking he got the blame. He panics that people will think he tried to kill himself and that Brad might come back and finish him off properly. He then finds out that he ended up in hospital because of Ross. This hurts Finn. It frightens him when he finds out over the phone that the police have stopped searching for Brad.
In early August 2014, Pete discovers that Finn is looking at a missing person's site. Upset he looks at a chat page for news about his missing mother. Eric suggests that he should talk to James about his mother. Later that month he tells Victoria that his mum sent him a message on Finding Family, but is left angry when he finds out that Victoria told James that he was looking for his mother. He initially wants to delete the profile that he set up to find his mother but eventually leaves it.
Later Megan Macey who is trying to catch Charity Macey cheating blackmails Finn into handing her Charity's room key. Megan starts video recording on her phone, but when they get in the room they a box on the bed with a cat in it thinking it belongs to Charity.
In September 2014, whilst going to a fancy dress do with Victoria, Jimmy catches him in the street wearing braces, cool shades and a bow tie. Jimmy offers to buy them from Finn for £25 but Finn offers for £50. Later in the month he and Aaron Livesy spend the night together. The morning after, he tells Aaron that Eric is going to kill him if he's late for work. Victoria accuses Aaron of having a go at her the night before jumping into bed with Finn. When Ross tells Finn he needs to escape from the village, he's angry to find out that Aaron slept with him. He confronts Aaron over him sleeping with Finn. Finn pines for Aaron, but Aaron has no real interest in him, other than using an unknowing Finn to make Robert Sugden jealous a few months later. Finn eventually resents the treatment and moves on. Both single and miserable, Finn and Victoria make a deal to get married with each other if by the time they get thirty both are still single. Feeling lonely after seeing that both her brothers were getting married Victoria starts crushing on Finn, until they set the record straight after she slips the tongue on an innocent kiss they had pretending to getting married.
In January 2015 Finn, with the help of Harriet Finch, tracks down his mother, Emma Barton. At first, things are awkward but a bond soon forms between Emma and Finn, and he desperately tries to convince the rest of his family to accept her back into the fold. Pete refuses to, but Ross is slightly more open. It is revealed that after the birth of Ross, Emma suffered from post-natal depression and later had Finn, which tipped her over the edge. She was consumed by paranoia about Moira and James and led to her trying to suffocate a young Ross with a pillow, which Pete had witnessed. Emma had left after this, when Finn was just a baby, and had only returned once to which Pete had told her to leave in order to protect his family. After hearing this, Ross and Finn turn against Emma. In time, they forgave her, and eventually move in together in Andy Sugden's old flat.
In February 2015, Val is rushed to hospital due to not taking proper care of her HIV. Her nurse, Darren Thompson, is interested in Finn, and they begin to date. Val is alarmed to learn he is HIV-positive and goes to great lengths to scare him away from Finn, including leaving him hateful text messages and smashing up his car. She eventually sorts things out. Finn soon finds Darren to be clingy and suffocating and goes to great lengths to make Darren dump him. When Darren eventually tells him he was looking for a reason to dump him as he wanted to reunite with his ex, Finn is mortified and regrets how he has behaved.
As the months pass, Finn is consumed by family problems. He has some regret over bringing Emma into his life, as he learns she tried to kill Ross when he was a toddler, and he discovers multiple instances of her obsessive meddling in James' life and relationship with Chastity Dingle. He also learns of Ross' affair with Debbie Dingle, only keeping the secret to protect Pete from heartbreak. He tells Ross that he is no longer his brother and the family was better off without him.
On the day of Pete and Debbie's wedding, a recording of Debbie confessing that she loves Ross is accidentally played. Shortly afterwards, a helicopter crashes into the village hall. Finn is pulled free from the wreckage by his parents. Val is killed, devastating Finn. In a video she recorded during her bout with pneumonia, Val calls Finn her favourite and jokes that she wants him to tattoo her name over his heart with her ashes mixed in the ink. He helps her sister Diane Sugden carry out her final wishes. Emma becomes concerned when Ross goes missing and Finn helps her search morgues and hospitals for him. Ross later shows up and reveals that Pete left him for dead. At first the family shun Pete, but Finn tries to reach out to his brother
In October 2015, Finn is given an interesting bet by Jimmy King, who proposes that if Finn can perform any dare he or his sister-in-law Bernice Blackstock have given him, then he will pay him £100. Jimmy formulates almost unthinkable dares for Finn, thinking he will easily earn the £100 from Finn in order to fix his own financial problems. However, Finn, undertaking dares such as wearing a dress, waxing his thighs, and drinking a blended English breakfast, appears to show no mercy to these challenges, making Jimmy nervous. Jimmy's final dare for Finn was to reenact a performance of his daughter's favourite film, Frozen. Bernice's daughter suggests they double the bet to £200 and both parties agree. When Finn performs the 2013 film Frozen, Jimmy informs him he has lost the bet as his daughter's favourite film was intact the 2007 film Frozen. Finn tells Jimmy he has been conned, but Jimmy stands firm and Finn produces his money.
In April 2016 Finn saw Charity's son Noah playing with a superhero figurine, which he recognized was rare and worth quite a bit of money. Charity mentioned that she had quite a few of them, so they both saw the opportunity to make some money, with Finn selling them online. Finn however was unaware that the figurines were stolen. When Finn's plan to sell them at a comic con event falls through he decides to sell them in the local hall. Finn is arrested later that day for selling stolen goods.
In October 2016, James dies in hospital following a confrontation with Emma whereby she pushed him off a bridge onto a motorway causing a massive pileup. Finn is devastated by the loss of his dad.
"Can I help you?" (first line)
"Out of all the ways to go... it was very Val, wasn't it? She could never just walk past a mirror." (commenting on Val Pollard's accidental death)
"What the hell are you doing?!" (in reaction to being sprayed by Victoria Sugden with a canister of paint)