Bank of England Act 1946

8 The Government stock issued in substitution for any Bank stock shall be held in the same rights and on the same trusts and subject to the same powers, privileges, provisions, charges, restraints and liabilities as those in, on or subject to which the Bank stock was held immediately before the appointed day, and so as to give effect to and not revoke any deed, will, order, mandate, notice or other instrument or testamentary or other disposition disposing of or affecting the Bank stock, and every such instrument or disposition shall take effect with reference to the whole or a proportionate part, as the case may be, of the substituted Government stock.