Britain's Foreign Secretary is calling for a beefing up of security services - partly in response to an increased threat from Russia.
Philip Hammond is giving a major speech in London - accusing Russian President Vladimir Putin of 'subverting' the global system of rules which maintain peace between nations.
Mr Hammond's criticism over Russian actions in Crimea and Ukraine comes as Moscow continues to deny having any troops over the border.
But Britain also has concerns about activities taking place on its soil according to security expert Dr Julian Richards.
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