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Other investments (Tables)
 12 Months Ended
Dec. 31, 2022
Other investments  
Summary of financial assets

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2022

    

2021

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£m

    

£m

Pound sterling

​

1

​

2

Other

 

23

 

—

​

 

24

 

2

Analysed as follows:

 

  

 

  

Current portion

 

1

 

2

Non-current portion

 

23

 

—

​

 

24

 

2