According to leading German media source, Deutsche Welle, the British premier and German chancellor have discussed war in Syria, counterterrorism efforts and the European Union. DW reports that they met for discussions at the Chequers country house north of London.
Source: Merkel visits Cameron for informal talks on EU, Syria | News | DW.COM | 09.10.2015
These are tricky times for David Cameron. There is little doubt that he will campaign to stay in the EU but there is considerable doubt over the concessions that he might secure from other European countries. In the unlikely event that the UK votes to leave the UK, it will probably be a resigning matter for David Cameron.
However, Germany wants the UK to stay in the EU. It will be interesting to see how German chancellor, Angela Merkel plays her hand.