A Downing Street spokesperson said:
The Prime Minister spoke to Prime Minister Bohuslav Sobotka of the Czech Republic earlier this afternoon. They discussed EU reform and the UK’s renegotiation of its EU membership, ahead of the European Council on Thursday.
The Prime Minister updated Prime Minister Sobotka on progress, noting that we had seen positive movement on economic governance, competitiveness, and sovereignty, as reflected in President Tusk’s recent letter, and that welfare reform and migration was obviously the most difficult issue.
Prime Minister Sobotka agreed that progress had been made, making clear the Czech Republic supported many of the UK’s proposals, and was ready to work for a non-discriminatory solution on welfare.
The Prime Ministers looked forward to a fuller discussion in Brussels on Thursday.