April 30 (Reuters) – London’s FTSE 100 index rose on Thursday, with upbeat results from Rolls-Royce and Glencore aiding the sentiment ahead of ‌a Bank of England rate decision.

The blue-chip FTSE 100 rose 0.9% ‌to 10,307.19 points by 0942 GMT, while the midcap FTSE 250 edged 0.4% higher.

• Engineering firms ​were mixed as Rolls-Royce climbed nearly 6.8% after reiterating its profit outlook, offering the biggest boost to the benchmark index, while Weir Group slid 7.5% after reporting a fall in first-quarter orders.

• Glencore shares added 2% after reporting a 19% ‌rise in its first-quarter ⁠copper production.

• Global oil prices jumped to a four-year high of more than $122 a barrel on concerns that the U.S.-Iran ⁠war could worsen and lead to a protracted Middle East oil supply disruption. [O/R]

• Rising crude prices stoked inflation worries, bolstering gold prices, which in turn lifted shares ​of heavyweights ​Endeavour Mining and Hochschild by 6.2% and ​5.1%, respectively.

• The FTSE 100 ‌is up only 1.3% this month, far below European and U.S. benchmarks, as markets view Britain as highly vulnerable to the jump in energy prices due to the country’s heavy use of natural gas.

• Political concerns have also weighed with the scandal around Prime Minister Keir Starmer appointing Peter Mandelson, who ‌was linked to the late convicted U.S. sex ​offender Jeffrey Epstein, as ambassador to the ​U.S., showing little sign of ​abating.

• The BoE is expected to keep rates unchanged at ‌1100 GMT with focus squarely on commentary ​on the Iran ​war’s longer-term impact on inflation.

• The European Central Bank is also seen holding rates later on Thursday, a day after the U.S. Federal ​Reserve stayed pat.

• Traders expect ‌the BoE to raise interest rates at least twice by 25 ​basis points before the end of the year.

(Reporting by Medha ​Singh in Bengaluru; Editing by Vijay Kishore)