Colin Baker, who played a former incarnation of The Doctor, wrote on Twitter:
Oh my goodness. Kate O'Mara is no longer with us. Sad sad news. A delightful, committed and talented lady and actress. We are the poorer
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The embattled Labour leader said the party had "not done enough" to win back voters' trust, and that he will "finish the job".
ITV News correspondent Duncan Golestani pays tribute to a fearless young Kurdish journalist he trained in Iraq.
ATM machines were affected, while people also reported problems using cards in shops.