Complex sentence: At the same time, P&O announced the closure of the Mostyn-Dublin service due to low passenger numbers, this subsequently led to the sale of "European Ambassador" and "European Envoy" for further service in Europe.
Split into simpler sentences: At the same time, P&O announced the closure of the Mostyn-Dublin service due to low passenger numbers. This led to the sale of "European Ambassador" and "European Envoy" for further service in Europe.