The premisesGive the room as well as the SE1 address
Waterloo is listed in Lambeth with SE1 coverage. For your particular enquiry, describe whether the signs concern accommodation, a food area or another workplace. These are possibilities to clarify, not assumptions about the address, and they help us discuss access and the people who need to receive instructions.
What you have noticedA precise report helps a busy premises
Ask staff or occupants to retain the location and timing of what they noticed. A brief accurate record is better than a growing collection of pest names. We examine the relevant signs and surroundings, separating direct observations from explanations that may have been added as the report passed between people.