The Home Office has warned that British nationals living abroad risk being refused entry to the UK from February 25 if they do not have a valid British passport.
New border control rules come into force for the first time in 65 years of modern immigration policy.
With these new rules, anyone traveling to the UK will need permission to enter, unless they are a British or Irish citizen or otherwise exempt.
While visitors must apply for a £16 electronic travel authorization, dual nationals face a more complex requirement: they must present a British passport or pay £589 for a “certificate of eligibility” attached to their second nationality passport.
Citizens naturalized in another country, particularly in the EU after Brexit, could find themselves excluded from their own country.
A Home Office spokesperson said the digitalization program enabled a “seamless travel experience” while giving the government greater authority to “arrest those who pose a threat”.
The 3 million-strong campaign group called on the government to introduce a low-cost travel permit similar to the Canadian system, warning that British citizens risk being “excluded from their own country”.
