The Brexit aftermath has exposed the Queen as an impotent head of state, campaigners have claimed today.

Graham Smith, CEO of campaign group Republic said today:

"We have a lame-duck prime minister and an opposition in chaos, the future of the UK is at stake and our head of state is unable to offer leadership."

"An effective head of state would provide stability, reassurance and leadership in times of crisis and great uncertainty.  Instead the Queen remains silent and aloof, knowing she cannot do anything for fear of jeopardising her own position."

"When we're seeing arguments about how to exit the EU, second referendums, Scotland vetoing Brexit and pledges to ignore the result, an effective head of state can provide constitutional leadership.  Instead the Queen remains silent and of no use to anyone."

"That's a major failure of the monarchy.  If our head of state were legitimate and accountable - elected by the people - they'd have the authority and mandate to step up at times of crisis."

"In a parliamentary democracy a non-partisan but effective head of state can hold the ship of state together in a crisis.  That happens elsewhere in Europe, in the UK we have an empty chair where a head of state should be."

"The Brexit aftermath needs to be met with a full-scale constitutional review that provides an effective head of state, chosen by the people to serve the nation."

Republic clarifies its position on the role of head of state on its website at republic.org.uk/what-we-want/our-head-state