Conservatives have already called for an ethics inquiry to be launched into Rayner’s tax affairs.

Angela Rayner is facing mounting scrutiny over her property portfolio, with accusations that she avoided £40,000 in stamp duty and questions around a house valuation in her constituency.

These suggestions are made more embarrassing by her dual roles as deputy prime minister and housing secretary.

The Times has reported on the “remarkable coincidence” that, at £650,000, the deputy prime minister bought a flat that was the exact price as the threshold for inheritance tax (IHT).

The property, in Rayner’s constituency of Ashton-under-Lyne, was jointly owned with her former husband and was placed in a trust administered by the law firm Shoosmiths Trust Corporation.

Under the current IHT regi

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