The reason why they cancelled all direct European flights was they had no 777/A350's spare after the 2022 bankruptcy. They are now looking to rebuild the fleet. The sooner, the better, but it'll be years before we see a Manila>Heathrow route.
"The CEO of Philippine Airlines, Stanley Ng, announced that the airline is considering ordering a large number of new aircraft to meet expected growth in demand. He told ABS-CBN News that they are studying the possibility of ordering around 75 planes.
Ng also mentioned that, including their current orders, the airline is aiming for a total of about 100 aircraft on order. Right now, Philippine Airlines has orders for thirteen A321-200Ns and nine A350-1000s. According to Airbus, the airline expects to receive the first A321N in mid-2026 and the first A350 in the second half of 2025."