Censor.NET reports citing the press office of the president.
The parties have discussed topical issues of bilateral and international cooperation in the context of the UK's decision to leave the EU.
The president thanked the British Government for its firm stance in support for Ukraine's sovereignty and territorial integrity.
Theresa May has confirmed that the position of the United Kingdom as regards sanctions against Russia remains unchanged: sanctions must continue until full implementation of the Minsk agreements.
The UK's prime minister has also underscored strong commitment to the policy of non-recognition of the annexation of Crimea by Russia.
The parties have expressed interest in expanding economic cooperation between Ukraine and the United Kingdom.
In the course of the conversation, the interlocutors have also discussed the continuation of British financial and expert assistance in the implementation of reforms in Ukraine and training of the Armed Forces of Ukraine.
Petro Poroshenko has invited Theresa May to visit Ukraine.
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