Leeds Magistrates’ Court heard how, on 28 April 2016, Mark Smith,36, was working at Stone Gappe Hall, Lothersdale, Keighley, owned by Richard McAlpine, a director of the McAlpine group of companies.

Smith was attaching straps to a water tank whilst preparing to move it to a lower floor of a water tower at the property, in order to paint the floor.

An HSE investigation found that Smith fell through an opening that did not have fixed edge protection.

As a result he sustained serious injuries including: a right tibial shaft fracture, a distal fibular fracture, a fracture to the left patella, orbital and nasal fractures, lacerations to the face, a concessional head injury, injury to his ribs and he was hospitalised for nine days.

Smith continues to suffer from psychological damage and has been unable to return to work.

Sir Robert McAlpine Ltd pleaded guilty to safety breaches and was fined £260,000 and ordered to pay £38,299 in costs.

After the hearing, HSE inspector Paul Thompson commented: “Falls from height often result in life-changing or fatal injuries.

“In most cases, these incidents are needless and could be prevented by properly planning of the work to ensure that effective preventative and protective measures are in place such as edge protection or barriers built to the correct standard.

“This incident could have easily been prevented if the company had undertaken a thorough risk assessment and installed adequate edge protection around the opening to prevent falls.”