Personally, I have now stopped doing any Fire with a sleeping risk now... rarely find a compliant install and have found most owners are looking at the bottom line for compliance.
Seen some real gash over the last few year, 1 zone covering 9 flats on 4 floors to no services for 12 years plus... work on the opinion now that if the owner has that little respect for fire safety I am not interested.
So, on that cheery note... Dont quote it with out a walk around of each site, open some panels have a look at whats what, check the paperwork on site to see what order its in....cover you **** or risk getting it ****** when you drop the soap!