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The weekly losses in long-dated UK gilts are due to the rebounding oil prices

Oil prices rose again on Friday, causing a loss for long-term British government bonds. This wiped out the gains made earlier in this week by the gilt market following a ceasefire agreement between Iran and 'the United States.

The performance of gilts was below that of similar U.S. debt, German debt and French bonds. This reflects Britain's vulnerability due to the fallout caused by rising energy costs. Britain is heavily reliant on natural gas, and its public finances are stretched, making it difficult to provide state support.

Long-dated gilts have been increasingly affected by fiscal worries.

The yield on 20-year bonds, which moves in the opposite direction to the price of the bond, rose 11 basis points today at 14.45 GMT, and is on course for a four basis point weekly rise despite the fact that it had fallen on Wednesday following the news of the ceasefire.

The optimism that the ceasefire would hold gave a modest boost on Friday to the share prices. However, the global bond markets were impacted by the rising oil price on the back of reports that attacks on Saudi energy plants had reduced the kingdom's production.

The Strait of Hormuz is also largely closed to tanker traffic.

Emma Moriarty said that spikes in gilt rates have become more common in recent years, as the UK economy has been left vulnerable by high public debt levels and anaemic growth.

She said inflation-linked bonds performed better than conventional gilts, unlike the "mini-budget crisis" of 2022 that was triggered by concerns about the fiscal costs of former Prime Minister Liz 'Truss tax reduction plans.

Investors have been willing to pay more for inflation-protected bond, especially at the short end where our funds are located, Moriarty stated.

The yields on short- and medium-dated bonds rose by 6-8 basis points in a single day.

Investors fully priced in a quarter-point increase in the Bank of England's interest rates over?the rest of 2026, and roughly 60% of a subsequent one. Investors bet on four rate increases by December at one point in the last month. (Reporting and editing by Sharon Singleton, Christina Fincher and Andy Bruce)

(source: Reuters)