Russia's Foreign Ministry said 'certain progress' was achieved during talks between Russia, Germany, France and Ukraine in Berlin on ways to end the military conflict in eastern Ukraine.
The ministry said in a statement all parties agreed to continue talks in the same format to prepare 'concrete proposals' for the heads of government in Russia, Germany, France and Ukraine.
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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.