A few weeks ago a Petermans board appeared outside my flat (one of three in the house none of which were let by or managed by Petermans), on the fence post shared with our neighbours. I noticed then that a lot of Petersen boards had suddenly appeared around the streets always on houses that had a number of flat conversions. I spoke to my neighbours and they confirmed that none in their house were let by Petermans and the same applied to the the flats across the road. My neighbour there told me they had rung Petermans to remove it and the person on the end of the phone had been 'less than helpful' so she took it down herself. It might be that they are going around putting up boards outside houses/buildings with multiple flats hoping that the residents will assume the board is referring to another flat.