YouTuber Adam Lockwood scaled the 310-metre The Shard building in central London barefoot on Sunday.
Mr Lockwood, 21, posted pictures and videos of himself online climbing the building, with one post appearing to show him at the top of the tower.
The Metropolitan Police later confirmed that a man had been arrested on suspicion of trespassing and two other men on suspicion of causing public nuisance, as the London Ambulance Service and London Fire Brigade attended the scene.
A couple staying on the 40th floor of The Shard were in bed when a man waved and climbed past their window at 6am.
Paul Curphey said it was “amazingly uplifting” to see the young man on Sunday.
Mr Curphey, 52, and his partner Treasaidh, were visiting the capital for a birthday trip.
“The climber was yelling in celebratory fashion,” the retail businessman from the Isle of Man told the PA news agency.
In pictures: London’s Shangri-La at The Shard - in pictures
“He appeared, waving at the window, 40 floors up, already in the deep end so to speak. We couldn’t help but urge him on to complete his mission.
“He was smiling, waving and having the time of his life.
“(My) partner thought I had pulled all the stops out and managed to get a guy to bring a box of Milk Tray for her birthday.”
Mr Curphey said the climber had a “happy demeanour”.
“It was scary to see but his happy demeanour was amazingly uplifting.”
Why it pays to compare
A comparison of sending Dh20,000 from the UAE using two different routes at the same time - the first direct from a UAE bank to a bank in Germany, and the second from the same UAE bank via an online platform to Germany - found key differences in cost and speed. The transfers were both initiated on January 30.
Route 1: bank transfer
The UAE bank charged Dh152.25 for the Dh20,000 transfer. On top of that, their exchange rate margin added a difference of around Dh415, compared with the mid-market rate.
Total cost: Dh567.25 - around 2.9 per cent of the total amount
Total received: €4,670.30
Route 2: online platform
The UAE bank’s charge for sending Dh20,000 to a UK dirham-denominated account was Dh2.10. The exchange rate margin cost was Dh60, plus a Dh12 fee.
Total cost: Dh74.10, around 0.4 per cent of the transaction
Total received: €4,756
The UAE bank transfer was far quicker – around two to three working days, while the online platform took around four to five days, but was considerably cheaper. In the online platform transfer, the funds were also exposed to currency risk during the period it took for them to arrive.
Results
6pm: Dubai Trophy – Conditions (TB) $100,000 (Turf) 1,200m
Winner: Silent Speech, William Buick (jockey), Charlie Appleby
(trainer)
6.35pm: Jumeirah Derby Trial – Conditions (TB) $60,000 (T)
1,800m
Winner: Island Falcon, Frankie Dettori, Saeed bin Suroor
7.10pm: UAE 2000 Guineas Trial – Conditions (TB) $60,000 (Dirt)
1,400m
Winner: Rawy, Mickael Barzalona, Salem bin Ghadayer
7.45pm: Al Rashidiya – Group 2 (TB) $180,000 (T) 1,800m
Winner: Desert Fire, Hector Crouch, Saeed bin Suroor
8.20pm: Al Fahidi Fort – Group 2 (TB) $180,000 (T) 1,400m
Winner: Naval Crown, William Buick, Charlie Appleby
8.55pm: Dubawi Stakes – Group 3 (TB) $150,000 (D) 1,200m
Winner: Al Tariq, Pat Dobbs, Doug Watsons
9.30pm: Aliyah – Rated Conditions (TB) $80,000 (D) 2,000m
Winner: Dubai Icon, Patrick Cosgrave, Saeed bin Suroor
PREMIER LEAGUE FIXTURES
Tuesday (UAE kick-off times)
Leicester City v Brighton (9pm)
Tottenham Hotspur v West Ham United (11.15pm)
Wednesday
Manchester United v Sheffield United (9pm)
Newcastle United v Aston Villa (9pm)
Norwich City v Everton (9pm)
Wolves v Bournemouth (9pm)
Liverpool v Crystal Palace (11.15pm)
Thursday
Burnley v Watford (9pm)
Southampton v Arsenal (9pm)
Chelsea v Manchester City (11.15pm)
Honeymoonish
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UAE currency: the story behind the money in your pockets