Watch the paranormal postman hunt ghosts at Wakefield’s Sandal Castle on video
Mr Pollard was fitted with his ghost-detecting equipment and filmed his experiences, although the windy weather, he said, made communication more difficult.
He said, “I’m happy with the video but I’ll have to do a better one. It didn’t go as well but I’ll be back soon with a better one.”
In the video, Mr Pollard can be seen exploring the nooks and crannies of Sandal Castle.
He attempts to communicate with the spirits using a dictaphone, a K2 device – used to monitor electrical signals – “spirit box” radio device, which scans AM and FM frequencies.
At the Battle of Wakefield in 1640, the Duke of York was mortally wounded and around 2,500 people died fighting in the vicinity of Sandal Magna.
On the video, it appears that the communication attempt is unsuccessful.
Mr Pollard, from Rotherham, said it is sometimes difficult to know what has been withheld from an investigation until the tapes are reviewed.
He said: “You don’t know how productive a night has been until you listen to it. I once heard a woman’s voice say ‘I stabbed her.’ was weird, I captured it on a simple dictaphone.
“You can’t have a two-way conversation, so you have to go back. It doesn’t flow, you just get chunks and bobs.
Mr. Pollard became interested in the supernatural about 20 years ago.
Since then he has conducted surveys with bands and more recently as a solo operator.
He said he gave up looking into the paranormal after strange encounters at Rufford Abbey in Nottinghamshire.
“There were things going on there and there were things there that scared me.
“There is always a fear that you will bring something home.
“I don’t know if I believe in ghosts, but I do believe that a part of us survives and you can communicate with it.”
As well as returning to Sandal Castle, Mr. Pollard would like to investigate any pubs in Wakefield that claim to be haunted.