Sarah-Beth Casey, who had three small children with her in her apartment, saw the immediate aftermath of the helicopter crash.
When I heard the explosion - it was like a little earthquake. It was like a gas explosion. I looked up to see debris falling off the tower. I can't see any people on the ground, it seems to be a lucky escape. The police and ambulance response was incredible.
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The shadow chancellor appeared to differ from his leader, who had been initially reluctant to blame the Kremlin for the ex-spy attack.
The Foreign Secretary said the Kremlin's tit-for-tat expulsion of 23 British diplomats would only impact Vladimir Putin's compatriots.
Sunday will be bitterly cold with snow for most.