"553-04 Lighting points
553-04-01 At each fixed lighting point one of the following accessories shall be used:
(i) a ceiling rose to BS 67
(ii) a luminaire supporting coupler to BS 6972 or BS 7001
(iii) a batten lampholder to BS 7895, BS EN 60238 or BS EN 61184
(iv) a luminaire designed to be connected directly to the circuit wiring
(v) a suitable socket-outlet
(vi) a connection unit to BS 5733 or BS 1363-4.
A lighting installation shall be appropriately controlled, e.g. by a switch or combination of switches to BS 3676 and/or BS 5518, or by a suitable automatic control system, which where necessary shall be suitable for discharge lighting circuits.
553-04-02 A ceiling rose shall not be installed in any circuit operating at a voltage normally exceeding 250 volts.
553-04-03 A ceiling rose shall not be used for the attachment of more than one outgoing flexible cord unless it is specially designed for multiple pendants.
553-04-04 Luminaire supporting couplers are designed specifically for the mechanical support and electrical connection of luminaires and shall not be used for the connection of any other equipment."
So who's to say that you don't adopt 553-04-01(v), and install "a suitable socket-outlet" to the lighting circuit, as a lighting point, for supplying lights (or whatever). Reasonable labelling (and / or reasonable location, e.g. at high level) should help overcome the temptation to plug heavy current using equipment into it (thereby avoiding nuisance trips); it would be hard to argue that such a labelled / located socket outlet, even if it is to BS1363, is not a "a suitable socket-outlet". Also,553-04-01(vi) refers to "a connection unit to...BS 1363-4", which is a standard Fused Connection Unit.