Consols (originally short for consolidated annuities, but subsequently taken to mean consolidated stock) was a name given to certain British government bonds (gilts) in the form of perpetual bonds redeemable at the option of the government. They were issued by the Bank of England. The first Consols were issued in 1751. They have now been fully redeemed.
In 1752 the Chancellor of the Exchequer and Prime Minister Sir Henry Pelham converted all outstanding issues of redeemable government stock into one bond, Consolidated 3.5% Annuities, in order to reduce the coupon (interest rate) paid on the government debt.
In 1757, the annual interest rate on the stock was reduced to 3%, leaving the stock as Consolidated 3% Annuities. The coupon rate remained at 3% until 1888. In 1888, the Chancellor of the Exchequer, George Joachim Goschen, converted the Consolidated 3% Annuities, along with Reduced 3% Annuities (issued in 1752) and New 3% Annuities (1855), into a new bond, 2¾% Consolidated Stock, under the National Debt (Conversion) Act 1888 (Goschen's Conversion). Under the Act, the interest rate of the stock was reduced to 2½% in 1903, and the stock given a first redemption date of 5 April 1923, after which point the stock could be redeemed at par value by Act of Parliament.
In 1927 Chancellor Winston Churchill issued a new government stock, 4% Consols, as a partial refinancing of the National War Bonds issued in 1917 during World War One.
On 31 October 2014 the UK Government announced that it would redeem the 4% Consols in full in early 2015. It did so on 1 February, 2015, and redeemed the 3½% and 3% bonds between March and May of that year. The final 2¾% and 2½% bonds were redeemed on 5 July 2015.