Hi,
There is a table on p.126 of J Whitfield's 6th edition, Guide to Wiring regs BS7671. This taken, apparently, from table 558 of 16th edition of BS 7671 : 1992.
Refers to 'Overcurrent protection of lampholders' tabulated in max Amps.
It does not however, invite the use of this as a means of choosing the protection for the circuit involved.
I think you would need, as in all this sparkling stuff, to be cautious in the interpretation, and personally I would be (as a non spark) following FWL's advice.
Not being argumentative .... But the above part of the book in question, seems a bit iffy in this area.
Perhaps one of the engineers could comment on this. Please.
P.