I’ve received a similar proposal for fire risk assessment works. I emailed firstname.lastname@example.org to ask precisely what they are proposing. They told me that it was to install a new fire alarm system. Further enquiries have not yielded much more information. But you could try that as a first step.
Eventually you’ll be sent a section 20 notice, and at that point you can raise formal objections. In my limited experience (one round of major works so far), Camden’s responses to a section 20 notice are unfortunately not very helpful.