LONDON, Aug 27 (Reuters) - Britain’s debt office said on Friday its first green gilt, designed to fund environmental investments, would carry a maturity date of July 31, 2033. The Debt Management Office said the syndicated sale of Britain’s inaugural green gilt would take place in the week commencing Sept. 20. Britain is seeking to burnish its green credentials before hosting a summit of world leaders in November to try to renew their commitments to an accord brokered in Paris in 2015 aimed at stabilising the planet’s climate. (Writing by William Schomberg; Editing by Alison Williams) Our Standards: The Thomson Reuters Trust Principles.