As the CAA has, so far, been unable to produce any justification when challenged, I suggest that this is totally ignored until such time as they can do so. Apparently, this was suggested by a FISO (yes, FISO) member of the Phraseology WG quite a few years ago, was agreed by the infinitely stupid members, for some reason was not actioned but was resurrected as a C/F action recently. Apparently, they did not understand the principle that a standard phrase (i.e. runway plus clearance) should not be split with other information inserted in the middle. The ICAO and EU references that were quoted as the authority had no mention whatsoever of this topic!
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