Part of HM Treasury having responsibility for Gilts. Lists 0845 3576500 as the only contact number. Address is The United Kingdom Debt Management Office, Eastcheap Court, 11 Philpot Lane, London

Any National numbers known.

I have tried this number on four occasions without success, 0207 8626500, the automated menu has two options which are not relevant to my query, chose both options and given the 0845 number. Did not choose an option connection dropped out. Tried this no option again an hour later, success put through to Prospectus dept.