XML 149 R137.htm IDEA: XBRL DOCUMENT v3.20.4
Trade and other receivables - Summary of Trade and Other Receivables, Amounts Falling Due After More Than One Year (Detail) - GBP (£)
£ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Trade and other non-current receivables [abstract]      
Prepayments £ 2.2 £ 3.0  
Accrued income   16.5  
Fair value of derivatives   8.4  
Other debtors 135.4 152.1  
Trade and other receivables [1] £ 137.6 £ 180.0 £ 176.2
[1] Figures have been restated, as described in the accounting policies.