Morningstar DBRS: New UK Prime Minister, Same Fiscal Challenges

The orderly transition from Keir Starmer to Andy Burnham has limited bond market volatility, but the UK’s underlying credit challenges are unchanged.

On July 20, Andy Burnham was formally appointed Prime Minister of the United Kingdom (rated AA, Stable) following Keir Starmer’s resignation last month. Burnham secured nominations from 379 of Labour’s 403 MPs. He named John Healey, Starmer’s former defense secretary, as chancellor of the exchequer. The swift and orderly PM transition limited near-term political uncertainty, and the bond market reaction has been subdued. Nevertheless, the UK’s underlying credit challenges are unchanged. In our view, the trajectory of the UK’s credit quality depends on the new government’s ability to deliver a credible fiscal and economic strategy amid constrained public finances.

From a credit perspective, Burnham and Healey face the same fiscal challenges as their predecessors. Public debt remains elevated, debt interest costs continue to rise, and spending pressures across healthcare, defense, and public services persist. Headroom against the main fiscal rule was already narrow at the March forecast and has likely been further eroded by higher gilt yields and higher global energy prices related to the Iran war. This increases the risk of fiscal slippage and limits the scope for additional spending without offsetting policy measures.

Although the Starmer government was undertaking a fiscal consolidation, largely through revenue-raising measures, the challenging fiscal backdrop has not changed following the leadership transition. Thus, a key credit consideration is whether Burnham can pursue his policy objectives without weakening fiscal credibility. The government’s policy direction remains largely uncertain, particularly the extent of fiscal loosening. Addressing cost-of-living pressures seems to be a main priority. He already proposed VAT cuts on energy bills. This would have to be reconciled with limited fiscal headroom and the fiscal rules.

Burnham has yet to make formal policy commitments. The forthcoming Autumn Budget, accompanying OBR economic and fiscal forecasts, and the government’s new 10-year economic plan will provide clarity on the UK’s macroeconomic agenda and future policy direction. Despite the sizable majority in parliament, politically difficult policies may face implementation roadblocks. Even with these uncertainties, the UK’s credit ratings continue to be underpinned by its large and diversified economy, well-established democratic institutions, credible and effective monetary policy framework, and deep, liquid capital markets. Morningstar DBRS will continue to monitor developments closely and assess the credit implications of the government’s evolving policy agenda.

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