Financial instruments

Contingent considerations, included in trade and other payables, are level 3 financial liabilities.

Changes in level 3 instruments are as follows:

 

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  Six months 
ended 
30 November 
2016 
Unaudited 
R’000 
  Six months 
ended 
30 November 
2015 
Unaudited 
R’000 
  Year 
ended 
31 May 
2016 
Audited 

R’000 
 
Contingent consideration            
Opening balance  83 563     123 902     123 902    
Acquisition of Reware Proprietary Limited  1 150     –         
Acquisition of Utilities World Proprietary Limited  4 516     –         
Settlements  (49 109)    (1 631)    (1 931)   
Gains and losses recognised in profit or loss  2 271     3 931     (38 408)   
Closing balance  42 391     126 202     83 563    
Total gains or losses for the period included in profit or loss for liabilities held at the end of the reporting period, under:                   
Other income       –     (48 120)   
Finance costs  2 271     3 931     9 712    
Change in unrealised gains or losses for the period included in profit or loss for liabilities held at the end of the reporting period  2 003     655      9 127   

The fair value of the contingent consideration is estimated by applying the income approach. The fair value is based on the discount rates applicable to the Group and management’s probability assumptions on certain warranties being achieved. There have been no changes in management’s probability assumptions. The discount rate has been increased in line with the increase in the prime lending rate. The resulting changes in the fair values are accounted for in finance costs in the statement of comprehensive income.

The investment in Oxigen Services India Private Limited, viewed as a venture capital investment and accounted for at fair value, is a level 3 instrument. Refer to “Investments in and loans to associates and joint ventures”.

The Group has not disclosed the fair values of all financial instruments measured at amortised cost, as their carrying amounts closely approximate their fair values.