You asked

Please supply the amount of national debt Britain had in March 2014.

We said

​Thank you for your request.

Public Sector Net Debt excluding public sector banks (often referred to as National Debt) was £1, 441.1 billion at the end of March 2014.

These figures are available in table PSA1 of our published tables:

https://www.ons.gov.uk/economy/governmentpublicsectorandtaxes/publicsectorfinance/datasets/publicsectorfinancesappendixatables110