India, Pakistan and Rwanda are among countries targeting people on Britain's streets in what has been labelled a "flagrant" campaign of intimidation.
A report published on Wednesday has revealed how foreign states have used online harassment, lawsuits and physical violence to intimidate people in the UK.
Russia, China and Iran were the worst offenders, the Joint Committee on Human Rights found.
But alongside that trio, evidence suggesting countries including India, Rwanda, Pakistan, Egypt, Saudi Arabia and Bahrain had tried to target people in Britain.
PA
|India, Pakistan and Rwanda are among countries targeting people on Britain's streets, a report has found
Committee chairman Lord Alton has warned that threats are "going unchecked" after his report found that MI5 investigations into foreign threats had surged by almost 50 per cent in just three years.
MPs and peers in the group said they had also received "substantial" evidence of intimidation by the Eritrean Government, including surveillance of anti-Government activists and infiltration of "community groups" and churches in an bid to isolate opponents of the regime.
They also laid into Interpol, accusing it of failing to get on top of misused "red notices" or international requests for an arrest.
Almost half of the 6,550 public red notices currently in circulation have been issued at Russia's request.
Lord Alton said: "We want to see a two-pronged approach from the Government.
PA
|Lord Alton's (second from left) report has unearthed a string of countries involved in targeting dissidents in Britain
"More needs to be done to give support and protection to the individuals and communities most at risk of transnational repression.
"We also want to see transnational repression prioritised in diplomatic relations and leadership at an international level to tackle the misuse and exploitation of systems of justice to silence and intimidate."
The committee has also demanded China be placed in the highest tier of the "foreign influence registration scheme" which came into effect last month.
Leaving out Beijing risked "undermining the credibility and coherence" of the scheme given the extent of Chinese transnational repression.
PA |
The committee has also demanded China be placed in the highest tier of the 'foreign influence registration scheme'
The Home Office said: “We take the threat of transnational repression extremely seriously.
"Any attempts by a foreign state to coerce, intimidate, harass, or harm individuals on UK soil are considered a threat to our national security and sovereignty, and will not be tolerated.
"The committee's review echoes many of the same findings and recommendations from the Defending Democracy Taskforce report on TNR, published in May, and we are already taking action arising from those recommendations to further strengthen our response."
An Interpol spokesman said: "Every year, thousands of the world's most serious criminals are arrested thanks to Interpol’s systems.
"Children are saved from sexual exploitation and terrorists, cyber criminals and traffickers are brought to justice.
"Interpol knows red notices are powerful tools for law enforcement co-operation, which is why we have robust processes for ensuring that all Interpol notices and diffusions comply with our rules.
"Our constitution forbids Interpol from undertaking activities of a political, military, religious or racial character and all our databases and activities must also comply with the universal declaration for human rights."