Britain exited the European Union because it wanted to reclaim its sovereignty. Learning from Norway’s EU experience, Britain must be cognisant of the limits on its autonomy, even as a non-member, write Johanne Døhlie Saltnes, Merethe Dotterud Leiren, Arild Aurvåg Farsund, Jarle Trondal, John Erik Fossum and Christopher Lord.

Even the keenest Brexiteer must feel that the process has been tortuously long. / That has been, in large part, because successive British governments have refused to accept the trade-off between untrammelled sovereignty and friction-free access to the EU’s single market, a refusal that shapes today’s increasingly testy relationship.

If not, and the vote is to exit, it will be no good saying afterwards that “we didn’t understand what we were voting for” – the repeated complaint made by eurosceptics about the 1975 Referendum. By then it will be too late.

This small sector has been promised benefits that will not materialise.