What happened to the 1634 Llandudno to Liverpool today?, 7 July

https://www.realtimetrains.co.uk/service/gb-nr:G38479/2026-07-07/detailed#allox_id=0 suggests that it was on time from Shotton, lost about 1/2 hr on the approach to Chester and is shown as passing, which I have never noticed before, then lost another 20mins to Mickle Trafford and never reached Helsby...
(or have we got scrambled data imported into RTT?)

Looks like it terminated at Chester.

The service reached Chester at 17:39.

From what I can tell, it then departed on time at 17:43, stepped into the TD berth which represents Helsby, Frodsham and Frodsham Junction (hence the reports at Helsby, Frodsham and Frodsham Junction on RTT), and then reversed back to Chester, overwriting the original reports for these locations which is why the delay shows.

I think the +26 at Chester is because RTT has combined multiple reports at the station and "averaged" the times, meaning -4 and maybe +60 got combined to produce the +26 delay.

Thanks for the explanations, very helpful. I see that 1F65 1704 from Birmingham New Street was terminated at Crewe too, so maybe part of the same thing.

MrJeeves said:

hence the reports at Helsby, Frodsham and Frodsham Junction on RTT

Click to expand...

The reports at Helsby and Frodsham are manual. It looks like the train reversed back to Chester on the Halton Curve after departure from Frodsham towards Liverpool.