it is with you saying that they went as soon as you photographed them , this is the bit the bbc have added to the rules in january
>> Photographing / Videoing of an EO during a Visit
7.2 There is no law prohibiting an individual from taking either photographs or video
footage of an EO conducting a visit on private property.
Accordingly, the EO should not, under any circumstances, confront or try to
prevent an occupant who wishes to do so.
If an EO finds themselves in a situation where they are being photographed or
videoed they must remain calm and continue to conduct themselves in a
professional manner and ensure that they walk away from the visit as soon as
they become aware that they are being filmed or photographed.
All instances of filming/photography must be notified to a manager as soon as
possible, and a full report provided. <<