| £m | |
|---|---|
| At 1 April 2004 | (14.1) |
| Additions (note 14) | (4.6) |
| Release on sales | 0.6 |
| At 31 March 2005 | (18.1) |
Negative goodwill arises on purchases of corporate entities with contingent tax liabilities. Any discount received is recognised as negative goodwill, which is released on subsequent sale of the related properties.