The Maltese authorities have dropped all charges against a British scuba diver who had been charged with two involuntary homicides, sources said.

Stephen Martin, who is based in West Sussex, UK, was due to go to the high court in London on Wednesday to appeal against a European extradition warrant ordering his removal to face trial.

An experienced diver, Mr Martin was diving with eight friends from the Brighton branch of the British Sub-Aqua Club on June 18, 2014 when Larissa Hooley, 48, and Nigel Haines, 59, lost their lives.

An inquest ruled the deaths accidental.

Mr Martin said today: “I am overwhelmed. This has been an utter nightmare for me, and I am just so relieved it is over. I feel I can finally start grieving for Larissa and Nigel, I just can’t keep back the tears.

“I would like to thank everyone who has supported me over the last 12 months – I have been overwhelmed by the support of divers in the UK and worldwide and for all the efforts that have been made on my behalf to get these charges overturned."

Sources said the charges were dropped following a visit to the Attorney General by the British Sub-Aqua Club (BSAC).

BSAC chief executive Mary Tetley said:

“This was a tragic accident and Stephen is among the many who are still grieving their loss... The decision today brings to an end the horrendous ordeal which Stephen has suffered since he was charged, and we are both delighted and relieved for him.”