LONDON — The British police officer who was poisoned in a nerve agent attack on a Russian former spy has said that he and his family had to abandon all their belongings because of possible contamination — not just their home and cars, but every item in them, from family mementos to their children’s toys.

“We lost all of our possessions, including the kids’ — everything the kids own, we lost all that,” Detective Sgt. Nick Bailey told the BBC in an interview broadcast on Thursday. It was his first public account of his experiences since the March 4 attack in Salisbury.

“We lost everything,” he said. “It’s been very difficult to come to terms with that.”

British news media have reported that the government will compensate Sergeant Bailey and the other victims of the attack, which used a Soviet-developed Novichok nerve agent, but this has not been officially confirmed.

In all, the attack killed one person and sickened four others, who may have suffered lasting physical harm.