The British prime minister will urge the bloc leaders to expel Russian intelligence agents from their countries.
Nicolas Sarkozy's 2007 campaign allegedly accepted illegal funding from the then Libyan regime.
British officials view the visit as an opportunity for the U.K. to strike deals worth $100m over 10 years.
The alliance is a reminder of Chancellor Angela Merkel's skills as a political survivor.
A new challenge for U.K. businesses already faced with a shortage of skilled workforce.
The country’s far-right Northern League has vowed to introduce mass deportation of migrants.
As part of the agreement, SPD could get hold of key ministries, including finance, foreign and labor.
The move sparked a diplomatic friction with Israel, which accused Poland of changing history.
SPD faces voices of dissent internally over the prospects of teaming up with Chancellor Angela Merkel.
German Chancellor Angela Merkel’s conservatives and the Social Democrats (SPD) iron out differences.