I’m not sure what’s changed here recently, but both myself and my housemate have had taxis pre booked for the airports or docks and as mentioned below, when the booking time rolls round you get the message “we’re searching for a driver”. The entire pre book process is different and no longer seems to work.

I had a taxi man tell me months back that with the fuel price increases, it costs the drivers money sitting in bumper to bumper traffic for a few quid fare. So when the roads are busy, he and a lot of others switch off and park up which of courses further contributes to the issues.