FTSE 100 opened lower, down 0.09% at 03:15 ET, while DAX rose 0.2% and CAC 40 up 0.1%.
US President Donald Trump announced an indefinite ceasefire extension with Iran but maintained a naval blockade, citing Iran losing $500 million daily.
Oil prices fell after the ceasefire news, yet Strait of Hormuz shipping remains constrained, keeping crude markets uneasy.
UK inflation rose to 3.3% in March, driven by the sharpest fuel price increase in over three years.