He said he was initially told investigators had found no evidence of a data breach, but questioned whether the correct time period had been examined.

He said the unexpected visit left his wife distressed and vulnerable, adding: “She raised a concern that because she’s a female, her clothes might not be in the proper place and she wasn’t expecting any visitor at that point. She was a bit afraid.

“She’s a practising Muslim and she was worried about her religion and all this stuff like that.”

He added that after the healthcare worker returned for a second visit,”my wife says, please don’t come here without telling my husband.”

Bristol NHS Foundation Trust, which runs Southmead Hospital, said it could not comment while its investigation was ongoing.

Glyn Howells, Senior Information Risk Owner (SIRO) and managing director, said: “The trust takes confidentiality of patient information extremely seriously.

“We are committed to ensuring patients’ records are only ever accessed where there is a legitimate need.

“We are currently investigating this complaint, and it would be inappropriate to provide any further comment until our investigation is complete.”