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Contract liabilities
12 Months Ended
Mar. 31, 2020
Contract liabilities [abstract]  
Contract liabilities
Contract liabilities
Contract liabilities primarily relate to the advance consideration received from customers for construction contracts, mainly in relation to connections, for which revenue is recognised over the life of the asset.


2020

2019


£m

£m

Current
76

61

Non-current
1,082

933


1,158

994


Significant changes in the contract liabilities balances during the period are as follows:
 
2020

2019

 
£m

£m

As at 1 April
994

866

Exchange adjustments
39

29

Revenue recognised that was included in the contract liability balance at the beginning of the period
(60
)
(51
)
Increases due to cash received, excluding amounts recognised as revenue during the period
185

155

Changes due to amounts recognised as revenue

(5
)
At 31 March
1,158

994