Summer is well and truly in the air, but Brits looking ahead to their well-deserved week in the sun have been warned to take extra caution. As the price of jet fuel has risen by 120 per cent since the start of the conflict in the Middle East, there are concerns of shortages in the coming months. Airlines have already hiked ticket prices, but further disruption is expected unless the Strait of Hormuz reopens soon. Before the conflict, Europe as a whole had about 37 days' supply of available. Now,