With millions of YouTube subscribers and more than half a million Twitter followers, his unannounced visit has set the area’s social media buzzing.
And for one youngster, Harry Fisher, 16, it was a life’s dream come true.
Harry, a pupil at the John Colet School, had sent an impromptu birthday card to KSI (real name Olajide Olatunji) and a two-page fan letter.
With the YouTube and internet sensation bombarded daily with fan mail it was unlikely that Harry’s birthday greeting would get more than a cursory glance from the online superstar.
But KSI, who has recently returned from the E3 gaming event in Los Angeles, had other plans for his birthday.
With his video man in tow the 20 year old jumped in his car and drove to Harry’s Buckland village home to make a personal visit just to say ‘thank you’.
“I was talking to my dad outside when I saw this guy at the end of the drive. He started walking towards the house with a camera man. Then I recognised him It was such a shock,” said Harry.
“I was so excited, I shouted ‘Oh my God’ and ran inside shouting ‘KSI is here’. It was incredible, he is my hero.”
The two then had a game of FIFA football on his Xbox and Harry won beating his hero 4-3 on penalties before KSI left well over an hour later.
The video of the visit is online on KSI’s YouTube channel and has received more than 750,000 views in less than a week.
Now Harry has his sights set on YouTube fame and has launched his own YouTube channel called MrGamm0n where he plans to emulate his hero KSI
“He is actually such a really, really, nice guy and just like you see on his videos,” said Harry.
“This was the most exciting day of my life which I will remember forever.”
WHO IS KSI?
A YouTuber who specialises in game playing (mainly FIFA), music and comedy videos. He has made 444 videos on YouTube, has 319 million total upload views and 2m subscribers on his YouTube channel. He is well known for his series, FIFA 12: Race to Division One. He is an Arsenal fan.