UK Long Gilts Lag Despite DMO Cut in 30-Year Issuance After Truss Shock
Reduced long-gilt supply has not restored price support because QT and structural demand shifts dominate. The two-sided ledger shows lower near-term issuance volumes traded against higher term premia and future rollover costs. Primary documents confirm the mismatch between DMO remit and market clearing conditions.
The Treasury’s stated goal of minimizing long-term borrowing costs collides with the BoE’s balance-sheet normalization and investor preference for floating-rate or inflation-linked exposure. Unless the DMO further front-loads short issuance or the BoE pauses QT, long-gilt underperformance will persist through the 2026-27 fiscal year, raising the weighted average cost of debt by an estimated 12-15 basis points.
DMO: Long-gilt auction tail exceeds 3 basis points in at least two of the next four auctions before March 2027.
Sources (2)
- [1]UK Debt Management Office Remit 2025-26(https://www.dmo.gov.uk/document/2025-remit.pdf)
- [2]Bank of England QT Schedule Q3 2026(https://www.bankofengland.co.uk/markets/market-notices/2026/qt-schedule)