By JASON CHESTER

This year’s T in the Park concluded on Sunday evening with a dynamic performance at Balado airfield in Perthshire. However, behind the scenes, controversy persisted regarding the Arctic Monkeys’ participation in a contentious tax avoidance scheme.

As the Sheffield quartet, they marked the end of an era by being the final act to perform on the Scottish grounds. This comes as T in the Park organizers plan to move after 18 years due to safety concerns about an underground oil pipeline.

Taking the stage, lead singer Alex Turner and his bandmates delivered a variety of popular tracks for the 85,000 attendees who journeyed north for the yearly festival. Their set included Snap Out Of It, Arabella, R U Mine, and their iconic breakthrough single, I Bet You Look Good On The Dancefloor.

Closing set: Alex Turner and Arctic Monkeys closed T in the Park with a storming set at Balado airfield in Perthshire on Sunday evening

The band rounded off a successful weekend of music, but their appearance was overshadowed by reports of their part in the ‘Liberty’ Tax strategy.

They are among 1,600 wealthy celebrities, business leaders, lawyers and doctors who together tried to shelter £1.2billion from the taxman via a complicated network of offshore companies.

Sir Michael Caine, Gary Barlow and two of his Take That bandmates, BBC presenter Anne Robinson, Katie Melua and George Michael also invested in the highly controversial scheme, a leaked database revealed.

Controversy: The band were performing after being named as participants in a controversial tax avoidance scheme

Main man: Alex Turner and his band worked their way through a slew of hits from their extensive back catalogue

Farewell: Arctic Monkeys are the last band to perform at the airfield, with T in the Park being relocated to a new site amid satiety concerns about an underground oil pipe

Other guests taking to the stage at Balado on Sunday included Sam Smith, Franz Ferdinand and Bastille – whose lead singer Dan Smith was feeling nervous ahead of the gig.

‘It’s quite exciting and mildly terrifying,’ he told the BBC. ‘It’s mad that we’re on the main stage. Last year we were on the Radio 1 stage, which is hardly small.

‘We’ve been doing a very long run of festivals so this is the last one. But only for about a week.’

Centre stage: Alex wore his hair in its customary quiff during the band’s latest performance

Going out with a bang: Alex and his band ensured the 85,000 fans who had travelled to the site got an adequate send-off

Scotland, we love you: Fans gather en masse to take in the Sheffield band’s performance

Scottish DJ Calvin Harris was amongst the highlights on Sunday after taking to the stage with Will Smith, who flew into the UK from Ibiza, where he’s been enjoying a sunshine break.

The Men In Black star took to the main stage before the DJ, telling them: ‘Ladies and gentleman, I present to you – Scotland’s own, Calvin Harris.’

The 30-year-old – a firm favourite with the crowd – opened by playing Under Control.

Rocking: Alex does what he knows best on Sunday evening

Lively: The crowd are worked up into a frenzy

The Modfather: Paul Weller also performed on Sunday

Showtime: Sam Smith took to the stage as T in the Park prepared to bow out of Balado airfield 

Let’s party! Russell Kane was amongst the festival goers in Perthshire on Sunday afternoon

Revellers danced in the rain as he played for more than an hour, before Will joined him back on stage for the final song shouting: ‘Scotland, I love you.’

The set came after a performance from Paolo Nutini in which he saved his hit Last Request until the end, much to the delight of the audience.

Festival-goers earlier covered up in waterproof ponchos as heavy downpours descended while Pharrell Williams took to the main stage at the event, which has four stages.

Here we go: Earlier in the day it was Tinie Tempah who worked the crowd up with a lively set

Close: Two female revelers display their affection for one another on Sunday

Looking good: Tinie opted for a tropical print ensemble for his performance at the Scottish music festival

Hand sin the air: Fans get into the music on Sunday

Jump around: The London based rapper was on form as her worked his way through a hit heavy set

But t rain cleared up during his 60-minute set, which he closed with hit single Happy.

The Charlatans were welcomed back to the festival 18 years to the day they performed at the very first T In The Park in 1997.

The Stranglers, Katy B, Tinie Tempah, Paul Weller and Scottish band Twin Atlantic, James and Rudimental were also on the line-up.

T in the Park is moving to the Strathallan Castle estate in Perthshire next year.

Star man: Will Smith was on stage after jetting into the UK from Ibiza

Rapper’s delight: The American star was in high spirits as he introduced Scottish DJ Calvin Harris

Let’s do this: Calvin makes his presence felt on Sunday

Farewell: T in the Park will move to its new home at the Strathallan Castle estate in Perthshire next year