On 1 December 2008, the corporation tax records of companies and organisations currently dealt with by HMRC offices in Walthamstow and Woolwich (that is those companies with reference numbers prefixed by 733 and 224) transferred to HMRC Central London, 13th Floor, Euston Tower, 286 Euston Road, London NW1 3UH, tel 020 7667 4200.