I was actually quoting from our FISO Manual and not the CAP410 which you would consider to both say the same thing.
I haven't got a recent copy of CAP410 with me at the moment so can't check it. What edition have you got? It's more than likely been changed again as there was a big fuss at the time about it, just haven't seen a bit of paper from ATS Standards advising as such.
Along the same theme of differing Aerodrome Manuals and CAP410, the following (or similar) appears in CAP410:
FISO's are not permitted to authorise a turn after departure, which is within the ATZ, that does not conform to the traffic pattern of traffic formed by other aircraft.
However, our Manual (which is of course approved by "The Authority") allows you to do the opposite.
