28 Related party transactions Joint ventures In the course of normal operations, the Group has contracted on an arms-length basis with joint ventures. The aggregated transactions which are considered to be material and which have not been disclosed elsewhere in the financial statements are summarised below: | | 2000 £m | | 1999 £m | | Other income | | 16 | | 18 | Purchases of goods and services | | (233) | | (315) | | |