By Chris Hastings and Peter Henn For The Mail On Sunday
Published: 01:06 BST, 15 September 2019 | Updated: 01:50 BST, 15 September 2019
Viewers of the Last Night Of The Proms last night voiced their disgust that the concert had been hijacked by anti-Brexit campaigners waving EU flags.
Those watching live on BBC1 took to social media to air their fury.
One wrote on Twitter: 'The Remoaners have hijacked a British institution with all the EU flags at The Last Night Of the Proms.'
Another said: 'Just watched it now – full of EU flags and hats. I really want to know what motivates these EU fanatics. They must hate their country.'
A pro-EU demonstration outside the Royal Albert Hall