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Treasury shares (Tables)
 12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Schedule of Treasury Shares
 
 
  
Pearson plc
 
 
  
Number of
shares
000s
 
  
£m
 
At 1 January 2018
  
 
5,994
 
  
 
61
 
Purchase of treasury shares
  
 
—  
 
  
 
—  
 
Release of treasury shares
  
 
(2,769
) 
  
 
(28
) 
  
 
 
   
 
 
 
At 31 December 2018
  
 
3,225
 
  
 
33
 
Purchase of treasury shares
  
 
6,100
 
  
 
52
 
Release of treasury shares
  
 
(6,067
) 
  
 
(61
) 
  
 
 
   
 
 
 
At 31 December 2019
  
 
3,258
 
  
 
24