Harry Tressler is a fictional character from the BBC medical drama Holby City, played by Jules Knight.

In February 2015, it was announced that Knight had quit the show in order to concentrate on the release of his first solo record.

Harry was also billed as a womaniser and a love triangle developed between him, Gemma Wilde (Ty Glaser) and Mary-Claire Carter (Niamh McGrady).

On 19 January 2013, it was announced that singer and actor Jules Knight had joined the cast as new doctor Harry Tressler.

[2] He admitted that he had to turn down previous roles due to his touring commitments with Blake, but after quitting the group he was free to return to acting.

[4] Knight admitted that he was nervous ahead of shooting his first scenes and was aware that he need to show confidence, as his character was a competent doctor who knew what he was doing.

[2] Arrogant, privileged and acerbically witty, first impressions of Harry can be misleading, but dig a little deeper and there is a warmth and affection that may not initially be obvious.

[6] During an interview with Lorraine Kelly, Knight branded Harry "a bit of a player" and a "renegade", who would break rules.

[10] When Billy started to charm Serena Campbell (Catherine Russell), Harry became concerned, especially when he later offered to fund her general surgery project.

[11] After arriving on the AAU ward, Harry "wastes no time" in flirting with fellow doctor Gemma Wilde (Ty Glaser) and nurse Mary-Claire Carter (Niamh McGrady).

She initially mistook him for a psychiatric consultant, but he later impressed her when he solved a case of a patient who thought she was a vampire.

[13] They also fell out when a former friend of Harry's, Gareth "Gaz" Mason (Jay Taylor), was admitted to AAU following an all-night drinking session.

[13] To make things up to Gemma, Harry gave her the spot in Ric's surgery session and arranged to look after her son, Finn (Finley Barrett).

[17] Knight explained to a What's on TV reporter that Harry and Mary-Claire had developed "a solid friendship" through their time together.

[19] When pharmacist Amy Teo (Wendy Kweh) joined AAU, Harry immediately started flirting with her as they helped a patient who had been using home-grown medicines.

[20] Harry soon learned that Amy was registrar Raf di Lucca's (Joe McFadden) wife, but it did not stop him from trying to charm her.

Knight explained "Raf has all the power, and Harry sees this as an opportunity to turn the tables and get revenge.

[9] Knight said that the storyline would run for some time, and that reception from viewers had been pretty positive, as they seemed to "love baddies".

Kweh commented, "Amy quickly realises that, in spite of his posh education, Harry's not going to be a gentleman about things.

"[23] When Amy learned Harry was being put forward for a fellowship in the United States, she realised there was a chance to get rid of him and save her marriage.

All he's thinking about in that moment is genuinely being a good doctor and saving Elijah, so Harry quite selflessly and spontaneously gets into the cleaning cradle in order to help this guy...and things go wrong from there.

[27] However, Adrian Fletcher's (Alex Walkinshaw) daughter Evie (Macey Chipping) encouraged him to face his fears.

[27] In February 2015, Mark Jefferies from the Daily Mirror reported Knight had quit Holby City to concentrate on the release of his first solo album.

[30] Knight explained "Harry realises he can't let Mary-Claire slip through his fingers, but he's confused.

[29] Jane Simon from the Daily Mirror called Harry a "yummy doctor" and thought his new speciality should be "Lying To Consultants, which he definitely seems to have a natural flair for.

"[33] Simon also wrote that Harry appeared to be trying to get through his training using "his nice eyes and pretty face alone", a similar tactic used by Oliver.

[33] Simon later noted that Harry's jealously towards Mary-Claire's ex-boyfriend Tom "serves him right for the offhand way he's treated her in the past.

[18] When Knight's exit from the show was announced, the Daily Mirror's David Wigg and Mark Jefferies wrote "Flirty Harry made quite an impression on the nurses after first appearing on the BBC medical drama in 2013.