Yes, the Act is applicable to industrial and storage buildings only that are greater than 7,000m3 in the County of Merseyside. I've dealt with a few applications where this has been applicable and the Local Fire Authority have been receptive to alternative proposals such as smoke venting or even a calculation of the expected fire size at the estimated point of Fire Service intervention, in lieu of the installation of sprinklers.
I don't have a copy of the Act to hand, but I know someone in our office has an electronic copy - I'll ask around to try and get hold of one for you. Interestingly, after looking through the BRE website, I found a Building Regulations Division Project titled, "Effects of Local Acts on Fire Risks" which states in the summary, "Local Acts have no statistically significant impact as far as life safety aspects are concerned"
As I'm only assessing the application for life safety, (under the Building Regs) I don't understand why these Acts are still being wheeled out, if it's been proven that they have no effect.
If you email me, or send me your email address, I'll email over anyone a copy of either or both