Regulation 9 Recognition of examinations in the British Transport Police
Where a constable has previous service in the British Transport Police and has taken an examination which would qualify him for promotion in that force—
(a)
from constable to sergeant and has obtained a pass therein, he shall be deemed to have obtained a pass in the qualifying examination but only in relation to qualification for promotion up to the rank of inspector; or
(b)
from sergeant to inspector and has obtained a pass therein, he shall be deemed to have obtained a pass in the qualifying examination for the purpose of qualification for promotion to any rank above the rank of constable.