Sir Cliff Richard has withdrawn from a charity event at Canterbury Cathedral on 26 September as he "doesn't want the event to be overshadowed by the false allegation," a spokesman for the singer has said.
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He is accused of raudulently attempting to gain money and housing by pretending he had lost family members.
A plan will be outlined on Monday by Northern Ireland Secretary James Brokenshire after the fourth deadline is missed.
The Government intends to fund abortions in England for women arriving from Northern Ireland, where it is illegal, Philip Hammond has said.