17. In the first column of Schedule 5 to the Road Traffic Regulation Act 1984 M1 (buildings in relation to which a Secretary of State is the appropriate authority for purposes of section 74), for paragraph 6 substitute—
A building owned by—
(a)a Post Office company (within the meaning of Part 1 of the Postal Services Act 2011), or
(b)a company which is a universal service provider (within the meaning of Part 3 of that Act),
where (in each case) more than half of the company's issued share capital is owned by the Crown (within the meaning of Part 1 of that Act).”