A man in Glasgow has been arrested after Nick Clegg was hit with an egg filled with blue paint.

The blue paint, symbolic of Mr Clegg’s decision to enter into a coalition with the Conservatives, was hurled at the deputy prime minister as he arrived at Woodside Hall for a party meeting.

Willie Rennie, the Scottish Liberal Democrat leader, was splattered by the majority of the paint, while Mr Clegg got away with just a small amount on his suit and face.

The man arrested had been a Liberal Democrat member for two years but decided to leave the party after the Coalition was formed last May. Stuart Rodger, a 22-year-old politics student, is said to have been disgusted by the right-wing turn taken by the Liberal Democrats.

Both Clegg and Rennie took the incident in good humour, with the deputy prime minister quoted as saying: “I've got three kids under 10, I'm quite used to having paint on me."

Mr Rennie joked: “I've always wanted a blue streak in my hair but my mother wouldn't let me."

He did, however, express his disappointment that the attacker was more interested in a stunt than in discussing his grievances.

Mr Clegg carried on with the meeting despite the incident.