A great-grandfather has splashed out thousands of pounds on making his life a real-life Peaky Blinders... on the fourth Sunday of every month.
Derek Brennan, 67, has spent at least £10,000 recreating the fictional 1920s gangster look. His four-bedroom home in Birmingham contains a staggering eight wardrobes full of paraphernalia.
The former skinhead, who grew up on a council estate in Dublin before moving to England at the age of 16, has a vast collection of three-piece suits, hats of all varieties and pocket watches, synonymous with fictional Tommy Shelby's on-screen look.
He owns 50 Peaky Blinders-style suits, many pinstriped or double-breasted, as well as between 60 to 70 hats including fedoras, trilbies, bowlers and - the Shelby family staple - flat caps. His repertoire also includes 10 pocket watches, which he has collected over the past eight years.
But the great-grandfather, who has nine children and 29 grand and great-grandchildren, estimates that the real number of costumes he's bought is much higher, as he has given many away.
Mr Brennan's outfits are so close to those worn on set that the 67-year-old has even won a Tommy Shelby lookalike competition, beating two professional impersonators to claim the £500 prize.
In 2018, he founded The West Midlands Peaky Blinder Group, now an online community of more than 50,000 fans who cosplay - or 'costume play' - as characters of the show and meet up at the pub.
The sight of large groups of men dressed in 1920s-style three-piece suits with cut-throat razors tucked inside their weathered flat caps may have caused alarm and distress on the streets of Birmingham 100 years ago.
Great-grandfather Derek Brennan, 67, has spent £10,000 on Peaky Blinders costumes. Here he is pictured with his friend, Christina, who helps him run The West Midlands Peaky Blinder Group fan club
The 67-year-old has nine children as well as 29 grand and great-grandchildren
His online community has members from over the world. Here he is (pictured third from left) at The Office Bar & Restaurant in Dudley, West Midlands, a 'real Peaky Blinders-themed' venue
However, that's not the reaction Mr Brennan and his dozens of similarly eccentric fan club members are accustomed to when they meet once a month to drink beer and take pictures with locals, to whom he has become a bit of a celebrity.
On the fourth Sunday of every month they fill the seats of the Big Bulls Head in Digbeth, just a stone's throw away from the studio where the show was filmed. There, they begin a pub crawl across Birmingham.
Mr Brennan said: 'We like to go out together and we started dressing like Peaky Blinders. It took off massively, in a good way, after I founded the group in 2018 and you get to meet new people. I love the fashion, the clothes.
'When we go on a pub crawl we walk like Peaky Blinders, people want pictures, everyone loves it and people welcome you into the pub and want to buy you drinks. They have become my family, it's a great way to make new friends.
'We all love dressing up, even the girls.'
As Mr Brennan's friend Christina, who helps run the group, put it: 'I enjoy the fashion and meeting up with the group at our various events, I've made many new friends and love helping to run the group with Derek.'
Mr Brennan said punters will always come up to them, say 'hello' and ask for pictures. On some nights, 50 to 60 members of the group will turn up clad in Peaky Blinders gear. The group's record is 84 people coming along to a night out in Worcester.
He said the 'best thing' about the group is 'when we go to an empty pub and fill it and all the people go there just to see us'.
Mr Brennan is pictured here with a couple from Chicago who had heard about him online. While on a trip to the UK, they also got dressed up and paid him visit
Members of the fan club meet once a month dressed as Peaky Blinders and go on a pub crawl around Birmingham. Mr Brennan said locals always want to take pictures with them
'I'm pretty well known all around the country,' Mr Brennan said. The great-grandfather has also found international fame.
A couple from Chicago on holiday in the UK who are fans of the show recognised him during a night out in Birmingham.
The 67-year-old has met Steven Knight, the show's creator, whom he said he'd like to thank 'for bringing the fashion back, flat caps and long coats, tweed suits and pocket watches'.
He has also been to see the new Peaky Blinders film The Immortal Man, now out on Netflix.
However, it wasn't the crescendo ending to follow the series that he was expecting. 'I don't think it's as good as the show,' he said. 'I was a bit disappointed to be honest.'
Nevertheless, Tommy Shelby remains Mr Brennan's idol. 'I like the way he's the boss and the way he walks,' he said, adding: 'He wears the clothes brilliantly.'
But the aerospace expert, who has worked for the same aircraft parts manufacturer in Redditch, Worcestershire for the past 49 years, has revealed how his love for Peaky Blinders is not all fun.
He said the obsession 'broke' his six-and-a-half-year relationship as his partner left him over it.
Large groups of men in suits with cut-throat razors tucked inside their weathered flat caps may have caused alarm and distress on the streets of Birmingham 100 years ago - but not so much today
Mr Brennan is pictured here with Peaky Blinders creator Steven Knight, whom the fan said he wants to thank for 'bringing back' 1920s-style fashion
Mr Brennan said: 'I split up with my ex over it. She left me 11 months ago. I did really love her, she was the love of my life.
'But I lost her through my addiction to Peaky Blinders, it broke our relationship. She said I put Peaky Blinders before her.
'We used to go out as Peaky Blinders together, she thought I was doing it too much. She came away from it a bit but… then she said she'd had enough of this.'
Mr Brennan also revealed how his addiction to the TV show has led to a rocky relationship with his children.
He said: 'My family said I need to stop, that I'm doing too much, many of them don't like me doing it.'
But it seems as though Mr Brennan isn't ready to lay down his flat cap and pocket watch just yet.