As of midnight on Sunday, the old round £1 coins have gone out of circulation.

This means that they are no longer accepted in most shops - despite hundreds of millions of them still not being spent or deposited.

If you happen to find one lurking down the back of the sofa, in an old bag or coat pocket, there's still a chance to spend them.

You can donate them to a worthwhile charity, as The Royal British Legion has confirmed that the Poppy Appeal will accept them throughout November.

Members of the public wear the paper poppy on their chest as a symbol to remember the fallen service men and women killed in conflict.

A spokesman for Sussex Royal British Legion posted on Facebook: “A quick reminder: The old £1 coins go out of circulation on October 15, but the Poppy Appeal can accept them during November.”

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Alternatively, some shops are still accepting the coins.

Poundland, Iceland and Aldi will be accepting the coins until the end of the month.

Tesco will accept the coins at the till and in its vending machines until October 22.

Greggs has said it will continue to accept the coins, but hasn't said how long for and The Entertainer will be taking them until the end of the year.

The Post Office, banks and building societies will also continue to take them when people deposit money into their accounts.

Poverty Child will send freepost envelopes to anyone who wants to donate their old coins to help street and slum children around the world.

Epilepsy Action is asking people to give their last old coin to their Pound For Pound initiative.