We have an agreement with WYFS that where we have a Part 1 system installed within general needs flats we will test then fortnightly rather than weekly. This just completed in the communal area at one of the break glasses. When we complete the service we will then attempt to enter a s selection of flats.
We have a team of a facility operatives who complete these tests checks along with a flick test on the emergency lighting and a few H&S checks on stairs and access etc.
We would also have a part 6 system installed within each flat and these are tested annually.
Hope that helps