CCTV showed Mr Shaw, who had seven or eight pints of beer during the evening, was walking towards the toilets in the basement of the venue at 01:17 when he fell, the jury was told.
He was found at the bottom of the 15-step staircase by staff a short time later and taken to Poole Hospital, where he died of multiple head injuries at 04:23.
The inquest heard that in June 2019 a different man was airlifted to hospital after losing his footing on the same flight of stairs.
The following month another man was found at the foot of the stairs and treated by paramedics.
Under questioning, the pub chain’s health and safety manager Paul Carrington agreed the stairs were “steep and narrow” compared to those found in more modern buildings.
He told jurors the pub contacted the Health and Safety Executive as a result of previous accidents in 2019 for advice, and changed the lighting and added coloured nosing to the top and bottom steps.