Notes to the Summarised Company financial statements | Note 4   Rm 2017    2016    4. Investments in subsidiaries           Vodacom (Pty) Limited 2 265   2 262     Vodacom UK Limited 489   489     Vodacom International Limited 3 841   3 571     VM, SA1 633   1 324     Vodacom Tanzania Public Limited Company 3 021   3 021        10 249   10 667     Note: During the current year, preference shares with a cost of R314 million were redeemed. The remaining preference shares, are redeemable by 28 June 2017 but are currently being renegotiated to be redeemable over the next three financial years. These preference shares were impaired by R377 million during the current financial (Note 2).