Which Alan Turing £50 notes should you be looking out for?

On the day that would have been Alan Turing’s 109th birthday, The Bank of England have just issued their final banknote in the polymer series, celebrating the famous scientist and mathematician.

The Alan Turing £50 Polymer Banknote

The brand new £50 note is full of exciting design and security features, including:

  • photo of Turing from 1951 which is part of the National Portrait Gallery’s collection,
  • A design of Turing’s trial model of his famous Automatic Computing Engine (ACE) Pilot Machine,
  • Technical drawings for the British Bombe,
  • Ticker tape depicting Alan Turing’s birth date (23 June 1912) in binary code, and
  • A large see-through window depicting a metallic microchip image with clovers around the outside in dedication to Bletchley Park, where Turing conducted most of his work in WW2.

You can find out more of the exciting features on the UK’s first-ever polymer £50 note here >>

Or, you can watch our video below!


Keen collectors will be eager to hunt down the most sought-after serial numbers for the new note.

When the UK’s first polymer £5 note was released in September 2016, serial numbers became the talk of a nation and stories of early serial numbers selling for thousands of pounds were commonplace.

In fact, an “AK37 007 James Bond Bank of England Polymer £5 note” even sold for £5,000 on eBay – 1,000 times its face value!

A ‘James ‘Bond’ £5 note sold for £5,000 on eBay

But as this brand new £50 enters circulation, which serial numbers should you be looking to get your hands on?

AA01 – the first notes to be printed

AA01 are the first serial numbers to be printed and always prove popular with collectors.

Our eBay Tracker follows the prices of the UK’s Top Coins and Banknotes, including the AA01 polymer £5 and £10 notes, which are currently selling for £10 and £15 respectively. However when the notes were first released we saw a collecting frenzy, with people paying (and demanding) vastly inflated prices for low serial number notes.

Prefixes on the £5 notes started at AA and there are 60 notes on a sheet, AA01- AA60. For each of these cyphers there are 999,000 serial numbers printed: 000001 to 999000. Therefore for the first AA cypher there’s an incredible 59,940,000 notes!

Whilst the £50 note is larger than the £5, meaning less notes will be printed per sheet, there are still A LOT of combinations for AA cyphers on the new £50 – so make sure you keep your eyes out for them!

However, The Bank of England will always hold back some of the notes with the earliest serial numbers, donating them to people or institutions that were involved in the development of the note or who traditionally receive a note when a new series is issued.

For example, Bletchley Post Office was one of the first places to have the new £50 note today, in recognition of the the work done by Mr. Turing and his team at Bletchley Park.

Key dates to look out for

It’s always worth looking out for certain serial numbers matching key dates relating Alan Turing that could become collectable.

For example, 23 061912 represents Turing’s date of birth, whilst 07 061954 relates to his death and 19 121954 would be his birth and death combined.

Alan Turing Aged 16 – Credit: TuringArchive.org

True Turing fans might also look for 09 071941 representing the date that the enigma code was cracked by Turing and his team at Bletchley Park during WW2.

Novelty numbers and Consecutive notes

There may well also be a rush to find the AK47 serial numbers again and James Bond 007 will likely be popular once more.

Consecutively numbered notes are always interesting to collectors too – one man sold three consecutive AA01 notes for £456!

Q&A

Can you request specific serial numbered notes from the bank?

Sadly not. For the launch of the new £5 note 440 million banknotes were printed and these were printed in very large batches.

To print enough banknotes to service the country’s 48,000 ATMs for example, it’s just not possible for the bank to separate certain serial numbers.

How much should I pay for a new £50 note?

The simple answer is, it’s completely up to you. An early serial numbered £50 note will be a genuine piece of the country’s history. It’s likely The Bank of England will hold an auction of early editions, so if you have the disposable income, why not?!

Will the old paper £50 note still be legal tender?

You will still be able to use the paper £50 note until The Bank of England withdraw it from circulation on 30th September 2022.

Many banks will accept withdrawn notes as deposits from customers. The Post Office may also accept withdrawn notes as a deposit into any bank account you can access at the Post Office. And, you can always exchange withdrawn notes with The Bank of England directly.

Where will I be able to find the new polymer £50 note?

Whilst not all cash points will offer the option to withdraw a £50 note, most banks should be able to provide you with one. It’s worth ringing your local bank in advance to check they have the new note before setting out to collect it.


Will you be looking out for any particular serial numbers? Let us know in the comments below!


Store, Protect, and Present YOUR Polymer Notes with the Polymer Banknote Collecting Pack!

The Change Checker Polymer Banknote Collecting Pack has space to securely house all four of England’s polymer banknotes, including:

  • 2016 Sir Winston Churchill £5 Polymer Banknote
  • 2017 Jane Austen £10 Polymer Banknote
  • 2020 JMW Turner £20 Polymer Banknote
  • 2021 Alan Turing £50 Polymer Banknote

Within your collecting pack we’ve also included ID cards for each note, an information page about the new banknotes, and a Change Checker album.

With the release of the final £50 polymer banknote in 2021 and the completion of the Bank of England’s polymer banknote update, now really is the perfect time to start collecting!

Secure yours today for JUST £9.99 (+p&p) >>

NATIONAL UK £5 FOR £5 BALLOT ANNOUNCED!

This year, Her Majesty Queen Elizabeth II celebrates her 95th Birthday, making her the first ruling monarch in British history to reach this milestone.

In celebration of this very special royal event, The Royal Mint issued a brand new £5 coin, featuring the Royal Cypher and an inscription taken from Her Majesty’s first televised speech.

But Change Checker is incredibly excited to announce that in celebration of Her Majesty’s birthday, we’re launching a NATIONAL EXCLUSIVE UK £5 for £5 Ballot!

We are giving 1,000 lucky collectors the chance of owning the brand new Queen Elizabeth II 95th Birthday £5 for its FACE VALUE of just £5!

It’s completely free to enter, all you need to do is click here >>

The ballot will close on the 25th June and winners will be contacted on the Monday 28th June with details of how to claim this new £5 coin for just £5 – so you must act fast if you want to be in with the chance!

As the Queen reaches this significant birthday, demand for this coin is already high, not just amongst fans of UK royalty coins but for collectors worldwide.

And now, with this Change Checker £5 Ballot NATIONAL EXCLUSIVE, we’d hate for you to miss out!

To sign-up now, for FREE, simply click here >>

The ONLY WAY to own Britain’s new Royal £5 coin for just £5!

Don’t miss out on your chance of owning the 2021 UK Queen Elizabeth II 95th Birthday £5 for its face value – just £5!

The winners will be contacted June 28th, so you must act fast if you want to be in with the chance! Simply click here to sign up >>

Curiouser and curiouser… What we know about the new Alice £5 coins!

“We’re all mad here!”

That’s right, at Change Checker HQ we’re all going mad for the new Alice’s Adventures in Wonderland and Through the Looking-Glass £5 coins which are set to be released later this year!

In the latest Royal Proclamation, it has just been confirmed that two brand new UK £5 coins are set to be issued celebrating Lewis Carroll’s ingenious novels.

English author, Lewis Carroll first introduced the world to the curious girl named Alice in 1865 with Alice’s Adventures in Wonderland which was later followed by Through the Looking-Glass in 1871. A firm favourite for generations of readers, Carroll’s novels are considered some of the best examples of the literary nonsense genre.

We can’t wait to see these new £5 coins when they’re released, but for now the designs remain top secret!

If you want to get ahead of the crowd, and be one of the first to receive these coins when they’re individually released, you can do so by signing up to the Change Checker New Issue £5 Subscription Service >>


Which characters would you like to see in this £5 series? Let us know in the comments below!


Be one of the first to receive the brand new £5 coins!

This is your opportunity to get ahead of the crowd and secure these brand new £5 coins and every future new UK £5 issue at the initial release price of just £10.99 (+p&p) >>

The Change Checker United Kingdom £5 Priority Subscription allows you to own the latest £5 coin releases, delivered to your doorstep, without any of the hassle of ordering the coin yourself!

To sign-up or to find out more, simply click here >>