But Lib Dem MP Martin Horwood said international investors now needed reassurance that the UK remained "at the heart" of European decision-making while his colleague Jo Swinson accused the PM of "rushing for the exit" rather than trying to secure a consensus.

BBC: EU veto: Cameron says he negotiated in 'good faith'

Foyle MP Mark Durkan called for an independent international investigation into the killings.

BBC: Mark Durkan calls for Ballymurphy killings inquiry

The Director General opened her visit with a meeting with Alan Duncan MP, UK Minister of State for International Development.

UNESCO: UK National Commission for UNESCO :: UNESCO Director-General concludes first official visit to UK