In March 2012, it was announced that Cameron King, an attacking midfielder from East Harling, would be joining the Canaries as an Academy Scholar in the summer of 2012. He is described as being technically sound and an excellent dribbler. He joined Norwich at the age of 8

King has been part of Scotland's Under-18 squad.

King played in both FA Youth Cup semi-final matches against Notts Forest which the Canaries won to progess to the FA Youth Cup final. He also played in both legs of the final which the Canaries won 1-0 and 3-2 against Chelsea to secure victory in the FA Youth Cup for the first time in 30 years. He made 13 appearances for the Under-18s in 2012/13

On 13th May 2014, King signed a two year professional contract with Norwich

King made his Norwich debut coming on as substitute in the 1-0 Capital One Cup defeat to Shrewsbury on 23rd September 2014.

In November 2014, Cameron was called up by Scotland's Under-21s and played and scored for them. He played again for the Scottish Under-21s on 5th September 2015, coming on as a late substitute in a win over Northern Ireland

King was released by Norwich on 10th June 2016. This was early as Cameron had been suffering from migraines whilst playing.

After receiving medical advice the Scotland Under-21 international is now ready to get back out on the pitch, starting at step five of the non-league pyramid joining hometown side Thetford Town on 3rd August 2016. Thetford boss Danny White said “He’s seen a specialist to get help but he’s a lad with a lot of potential, it’s just a matter of time before he goes on to play at a higher level. But in the meantime it’s a massive coup for us as a club, hopefully it benefits us and hopefully him if he plays regularly, gets fitter and impresses.”

In August 2017 Cameron signed for Irish side Shamrock Rovers on a one year contract. He had been on trial with the League of Ireland Premier Division side and did enough to impress manager Stephen Bradley to earn a deal.

“I was made aware of Cameron about six weeks ago and advised that I should take a serious look at him,” said Bradley. “Sometimes you get players in and they’re not what people say they are. Cameron was and he’s definitely going to be an attacking threat for us. We got him initially for just two or three days and straight away we liked what we saw. He’s very direct, very clever on the ball. He can play any attacking position, right, left or as a 10. We have him until the end of the season so hopefully he can show that quality." He made seven appearances for Shamrock Rovers.

In January 2018, Cameron returned to Norfolk to sign for Ian Culverhouse's Kings Lynn Town. King made eight appearances for Lynn as they reached the Southern League play-off finals. On 25th June 2018, he signed for Conference side FC Halifax.

King returned to Kings Lynn on 24th August 2020 following his release by Halifax. He had made 33 appearances for the Shaymen in 2019-20, the last in their 2-1 play-off defeat by Boreham Wood.

According to media reports in April 2021, League Two side Bolton Wanderers were keeping an eye on King and his midfield partner Sonny Carey.

He rejoined Thetford Town on 29th June 2022 following his release from Kings Lynn. He had not played during 2021/22 due to a health scare earlier in the campaign that had left him short of breath and with heart palpitations. With the subsequent medical tests providing no worrying results, Thetford ried to sign him on loan for last term's run-in but a deal didn't come together. His new manager Matt Morton said "When it came out (earlier) in the summer that his contract wasn't being renewed we obviously then got in touch. He didn't really want to talk or think about football for a couple of weeks because he had made some decisions that we didn't know about then that we now do. He has come to a conclusion he is in his mid-20s now and he hadn't played for a lot of last season so he wants to have some security by getting a job and a career for himself. Therefore his football would probably have to suffer as he wouldn't be able to stay in the pro game to do that. The decision was then do I drop down one or two levels or go where my heart is? And we're very lucky because his heart is at Thetford."

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