The UK's Debt Management Office, spun out from the Bank of England in 1998, manages one of the world's largest borrowers by selling billions in gilts annually. The DMO has successfully extended the average maturity of UK government debt, reducing sensitivity to interest rate volatility and giving HM Treasury more flexibility during global bond sell-offs.

Pension funds became the dominant buyers of long-dated gilts after the Robert Maxwell scandal of 1991 led to regulatory reforms. The Minimum Funding Requirement introduced in 1995 tied pension funding to gilt yields, creating artificial demand that distorted the market. Actuaries calculated liabilities using discount rates linked to gilt performance, pressuring funds to load up on bonds.

The dotcom crash amplified these effects dramatically. Falling equity values combined with declining bond yields inflated pension liabilities under MFR rules, forcing companies to inject cash into their schemes. This perfect storm of regulatory pressure and market turmoil cemented pension funds' appetite for long-dated gilts.

The Myners Report in 2001 acknowledged these distortions but the Pensions Act of 2004 replaced MFR with a more flexible funding regime. Today, this legacy creates an overhang in long-dated gilts that requires active management to prevent market dislocations.