Britain has “burned many bridges” during the Brexit negotiations and has “precious few” friends left in Europe, the head of a leading pro-EU think-tank has warned - with the apparent approval of a top EU negotiator.

Fabian Zuleeg, the chief executive of the federalist European Policy Centre delivered an 800-word broadside against the UK which was promptly re-broadcast on Twitter by Sabine Weyand, the deputy to Michel Barnier, the EU’s chief negotiator.

“Reality bites: The Brexit negotiations seen from the other side of the Channel by Fabian Zuleeg,” the think-tank tweeted, which was then passed on by Ms Weyand, who is often referred to as the “real brains” behind EU negotiating team by UK negotiators.