Light Bulbs Mr. Laws To ask the Secretary of State for Work and Pensions what proportion of light bulbs purchased by his Department in 2005 were of the compact fluorescent type. Mrs. McGuire As the majority of lighting on the Department’s estate is provided by functional fittings that use straight fluorescent tubes of varying lengths there is little scope to replace these with compact fluorescent. Consequently, compact fluorescent bulbs represent 15 per cent. of those purchased.