Proud mother Dr. Cath Brownlee said she reacted in disbelief to seeing her sons Alistair and Jonathan claim gold and bronze in the Olympic men's triathlon:
It's very unreal. You don't think that those boys running through that line and winning those medals are your sons.
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The chancellor now faces the prospect of forming a minority government or calling for a snap election.
The 73-year-old said a return is unlikely "given the politicised atmosphere that seems to have afflicted our set."
Chancellor Philip Hammond said the UK will make a financial proposal to the EU in the next three-and-a-half weeks.