I’m flying from Ireland to Liverpool on Thursday and it will be after midnight and I need to arrive at Wirral Airport by 5am. From what I understand from Googling, all buses stop running at 11:30pm. Is a taxi the only option?
You are right, public transport options are limited at this time. In such cases, the best option is to pre-book a taxi.
On my last trip, I used wirral to airport taxi for a ride from Liverpool to Wirral. They operate 24 hours a day, which is ideal for late arrivals. Their drivers are punctual and professional, and the cars are clean and comfortable. I booked the ride through their website.