From Wiki :-The electrical trade is currently mainly governed by the JIB (joint industry board), who require City and guilds 2330 Levels 2 and 3, City and Guilds National Vocational Qualification Level 2 and 3, and a completion of a recognised apprenticeship or suitable practical training, to qualify as an Installation Electrician.
I think that is incorrect, there should be some "or"s in there as opposed to "and"s. I don't have any of those C&G quails but am time served, NVQ3, HNC, 2382, 2391 etc.
I will have a look in the wiki shortly, a link would be handy tho.