[...] (although the UK book does say that the aircraft should not be allowed to cross the beginning of the runway until the clearance can be issued - I think this is one of the most commonly flouted rules) [...]
MATS pt 1 Sec2 Chap 1, 19.3
Unless specific procedures have been approved by the CAA, a landing aircraft shall not be permitted to cross the beginning of the runway on its final approach until a preceding aircraft, departing from the same runway, is arborne.
The mats pt 1 never specifies how far an inbound can proceed if it follows another lander, only following a departure.