BJ, this is a European problem unrelated to Brexit.
A more efficient solution could be to obtain a licence from Transport Canada which will credit foreign flight time.
From the Canadian personnel licensing and training standards:
Division VI - Private Pilot Licence
421.26 Aeroplanes - Requirements
(9) Credits for Foreign Applicants
(c) An applicant who does not hold a Private or higher pilot
licence–Aeroplane issued by a contracting state may be credited
foreign dual and solo aeroplane flight training time and aeroplane
ground school time towards the knowledge and experience requirements
for the issue of a Private Pilot Licence–Aeroplane, if the applicant
provides certification from the holder of a Flight Instructor
Rating–Aeroplane that all ground and flight training exercises have
been satisfactorily reviewed.
Outstanding flight training can be done with an instructor in the UK. The knowledge and instructor recommendation requirements can be covered by a Canadian online ground school course. The Canadian PPL only requires one written exam (3 hours, 100 questions, 60% pass mark). Medical examiners approved by Transport Canada can be found in central London, Stansted, and Gatwick. Vaccinated non-Canadians may visit Canada for discretionary purposes. Licence and test fees are under 500 GBP.