Early issues of new King Charles III banknotes raises close to a million for 10 UK charities.

Check down the back of the sofa - more than £7bn in old UK bank notes has not been cashed in.

Sunderland is one of 13 Post Office branches to get the first banknotes featuring King Charles III.

The £1 note smashed estimates of up to £15,000 when it went under the hammer at Noonans Mayfair.

The lot is "the finest Isle of Man note in existence", Andrew Pattison from Noonans Mayfair says.

The new notes have been printed ready to use and will be used for the first time on 5 June.

Auctioneers said "extremely fierce" bidding drove up the final price of the £5 note.

Paper £50 and £20 notes have been unusable since October, but can still be exchanged.