(28 Sep 2025, 1:42 pm)V514DFT wrote My exact thinking, how on earth did gain another 37 minutes onto its 

It may be worth sampling the service at rush hour to discover why it runs so late.
Multiple issues being the tight timetable anyways at any time of day.

Adding on to that the traffic light patterns means that multiple junctions only allow 1/2 cars at a time.

Ontop of that general congestion can cause delays onto the service. One of them causing all day issues being the council deciding to close lanes both sides of St Mary's boulevard to do gardening causing significant congestion.

Multiple factors can cause delays to services which the company has absolutely no control over. Some of these things would be good to take into account before making throw away comments.