Half a mile of the river Thames was polluted on 12 June after a fire at Sun Chemicals' ink works at Slough in Berkshire. The factory contained 100 tonnes of ink, 90 tonnes of varnish and 30 tonnes of solvent. Despite efforts to close off drains on the site, chemicals found their way into a local watercourse, and from there into the Thames. Water from the ditch was taken by tanker to the sewage works at Slough. The Environment Agency is unlikely to prosecute the company but will seek to recover its costs.