Scottish Labour MP Joani Reid has said she has never seen anything to make her suspect her husband has "broken any law", after her spouse, David Taylor, was arrested on suspicion of spying for China along with two other men.

Earlier, the Metropolitan Police said men, aged 39, 43, and 68, had been arrested in London and Wales as part of a counter-terrorism policing investigation under the National Security Act.

There is no "imminent or direct threat to the public", the Met added, and all three suspects are being held in custody.

Reid, who represents East Kilbride and Strathaven, said she is "not part of" her husband's business activities.

She added: "Neither my children nor I are part of this investigation, and we should not be treated by media organisations as though we are. Above all, I expect media organisations to respect my children's privacy."

Reid added that she had never been to China nor had she ever spoken on any China-related matters in the House of Commons.

"I have never asked a question on China-related matters. As far as I am aware, I have never met any Chinese businesses whilst I have been an MP, any Chinese diplomats or government employees, nor raised any concern with ministers or anyone else on behalf of, even coincidentally, Chinese interests.

"I am a social democrat who believes in freedom of expression, free trade unions and free elections. I am not any sort of admirer or apologist for the Chinese Communist Party's dictatorship."

The Met Police said a 39-year-old man was arrested in London, while a 68-year-old man was arrested in Powys, Wales, and a 43-year-old man was arrested in Pontyclun, Wales.

The men have been accused of assisting a foreign intelligence service under section three of the National Security Act, which was introduced in 2023 to target suspects accused of working against UK interests.

All three have been detained under the Police and Criminal Evidence Act and remain in police custody, the Met added.

As part of the investigation, searches were carried out in London, East Kilbride and Cardiff.

The Met said they were supported by counter-terror police in Wales and in Scotland.

Searches were being carried out at an address linked to one of the arrested men in Pontyclun by the Met, and a car outside was also searched and photographed.

A Police Scotland spokesperson said: "On Wednesday, 4 March, we carried out a search of an address in East Kilbride on behalf of an investigation being led by Counter Terrorism Policing London."

Commander Helen Flanagan, head of Counter Terrorism Policing London, said the force had seen a "significant increase" in national security casework in recent years, but officers were working to "disrupt malign activity where we suspect it".

The arrests come weeks after Sir Keir Starmer visited Beijing, as the government looks to pursue a cautious reset of UK–China economic ties.

Security Minister Dan Jarvis said if Chinese interference in UK sovereign affairs were proven, "severe consequences" would be imposed.

"This government stands resolute in our resolve to counter foreign interference activity targeting the UK from any state actor," he told MPs.

British officials had informed Chinese counterparts in London and Beijing about the allegations, he added.

Jarvis also said it would be "naive" for anyone to say that the UK should not have a "functional working relationship with China".

In response to Jarvis in the Commons, shadow cabinet office minister Alex Burghart said: "Unless the United Kingdom stands up to these threats, our country will continue to be treated with disdain."

Burghart referenced the previous collapsed spy scandal case involving China, and the recent approval of the Chinese mega-embassy in central London, despite opponents warning it could be used as a base for espionage and pose security risks.

Conservative leader Kemi Badenoch posted a video on X, saying: "The spouse of a sitting Labour MP has reportedly been arrested for spying, alongside the partner of a former Labour MP.

"These men were arrested under the National Security Act, suspected of assisting a foreign intelligence service, directly targeting our democracy.

"China is targeting Britain, targeting our MPs. Enough.

She also criticised Sir Keir's decision to visit Beijing in January, and the government's approval to build a new Chinese embassy in London.