Priya Rastogi told the MailOnline she phoned 999 three times and then was ignored in hospital when her husband Sunil became unwell.

She said she had to wait just under two hours for an ambulance after her husband developed gastritis symptoms on 17 February.

Sunil, who had recently become a father, died at Southmead Hospital 10 hours later after suffering a cardiac arrest.

Priya, who is now facing deportation to India, has filed a complaint to the coroner and Patient Advice and Liaison Service.

Chief nursing officer, Professor Steve Hams: ‘Firstly, we would like to offer our deepest condolences to Sunil's family following their loss. I want to acknowledge the profound impact this has had on them and assure them, and the wider public, that we take this matter with the utmost seriousness.

‘As a result of Sunil's death, we have already started a comprehensive review to understand the full circumstances of what happened. However, at this stage, it would not be appropriate to pre-empt any conclusions. We are committed to working alongside all parties involved, including Sunil's family.

‘We would also like to reassure everyone that patient safety remains our absolute priority at North Bristol NHS Trust. This review will help us to not only understand what happened but also to ensure that we continue to deliver the highest standard of care for every patient who comes through our doors. We remain committed to learning and improving wherever necessary.'