The prime minister declined to take sides in an East Anglian footballing rivalry as he congratulated Ipswich Town on promotion to the Premier League.
Labour MP for Ipswich Jack Abbott invited Arsenal supporter Sir Keir Starmer to the game between the two teams at Portman Road.
Mr Abbott joked that the town now boasted a top tier team - "unlike our friends over the border in Norwich".
He made the comments while also asking what help the government planned to provide to "struggling town centres" such as Ipswich. Sir Keir said addressing regional inequality was a priority for Labour.