About Dylan Llewellyn
Dylan Llewellyn is an English actor who completed a foundation course in acting at RADA. His early stage work included the National Theatre's A Handbag (2009) and later War Horse at the New London Theatre (2014), along with Lord of the Flies at Regent's Park Open Air Theatre (2015).
On television he first became widely known as Martin "Jono" Johnson in Hollyoaks (2011-2012), and he also had a short run as Seb Channing in Holby City (2013). His breakthrough came with Channel 4's Derry Girls (2018-2022), in which he played James Maguire, the much-mocked English cousin and only boy in the group. The role brought him a large international following.
Llewellyn followed Derry Girls with a lead in the Australian comedy Dodo (2021), the part of Wally Nightingale in Danny Boyle's Sex Pistols series Pistol (2022) and the role of Jack in Jack Rooke's acclaimed Channel 4 comedy-drama Big Boys (2022-2025). Film work includes the science-fiction romance Frequencies (2013) and Reavey Brothers (2022), in which he played Anthony Reavey, and he voiced Larry in the animated film 10 Lives (2024). He has also made guest appearances in The Bill (2010) and Call the Midwife (2020), and in 2025 he took part in Celebrity Race Across the World.
Since 2023 he has played PC Kelby Hartford in Beyond Paradise, the eager, warm-hearted young officer at Shipton Abbott police station whose enthusiasm often outruns his experience.
Dylan Llewellyn as PC Kelby Hartford
Earnest, observant and rooted in the community, Kelby often handles the practical threads that turn a strange incident into usable evidence.
Read the full PC Kelby Hartford character guide →
Key character relationships
- Humphrey Goodman — senior colleague
- Esther Williams — senior colleague
- Margo Martins — colleague
Episodes
Dylan Llewellyn is part of the continuing ensemble and appears throughout all four series and the Christmas specials. Browse the episode guide →
Dylan Llewellyn TV shows and films
- Hollyoaks (2011-2012, Martin "Jono" Johnson)
- War Horse (2014, stage, Billy)
- Derry Girls (2018-2022, James Maguire)
- Pistol (2022, Wally Nightingale)
- Big Boys (2022-2025, Jack)
- Beyond Paradise (2023-present, PC Kelby Hartford)
Dylan Llewellyn: quick answers
Who does Dylan Llewellyn play in Beyond Paradise?
Dylan Llewellyn plays PC Kelby Hartford, police constable, in the BBC One drama Beyond Paradise. Earnest, observant and rooted in the community, Kelby often handles the practical threads that turn a strange incident into usable evidence.
What else has Dylan Llewellyn been in?
Llewellyn's screen work includes Hollyoaks (2011-2012, Martin "Jono" Johnson); War Horse (2014, stage, Billy); Derry Girls (2018-2022, James Maguire); Pistol (2022, Wally Nightingale); Big Boys (2022-2025, Jack).
Is Dylan Llewellyn in Beyond Paradise Series 5?
Dylan Llewellyn was named among the returning cast when a fifth series was reported in April 2026. Filming took place in Cornwall and Devon in summer 2026 and the series is expected on BBC One in 2027.