28. Deferred revenue
 
   Group  Company 
   31 March 
2022 
Rm 
 
31 March 
2021 
Rm 
31 March 
2022 
Rm 

31 March 
2021 
Rm 
Deferred revenue 1 771 1 931 1 608 1 814
Non-current deferred revenue 138 235 125 227 
Current portion of deferred revenue 1 633 1 696 1 483 1 587 

Deferred revenue recognised at the beginning of the year

At the end of the prior year, R1 696 million (31 March 2021: R1 754 million) for Group and R1 587 million (31 March 2021: R1 616 million) for Company, was recognised as a current liability. The total revenue recognised in the current year, which related to carried forward deferred revenue associated to installation fee revenue and revenue payable in advance, is disclosed in the table below. The closing balance represents new contracts entered into where the performance obligations have not yet been met at year-end. The amounts recognised as a contract liability will generally be utilised within the next reporting period.

 
   Group  Company 
   31 March 
2022 
Rm 
Restated 
31 March 
20211
Rm 
31 March 
2022 
Rm 
Restated 
31 March 
20211
Rm 
Revenue recognised in relation to contract liabilities        
Deferred revenue 1 635 1 729 1 508 1 563 
1 The prior year revenue recognised in relation to contract liabilities has been restated. There was no impact on the primary statements.