Labour urges Tories not to hand out leaflets it says Frank Hester has paid for

Rishi Sunak under pressure to give up money from party's biggest donor after further allegations of racist behaviour

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Labour has written to Conservative candidates urging them not to hand out election material that they say is paid for by the party's biggest donor, Frank Hester, who has been widely condemned for allegedly making racist remarks.

Hester, who has donated 15m, is bankrolling about 40% of the Conservative party's national spending in the election.