Yes, if you look at a sequence of 1000-850 hPa thickness charts you can see it in action, plus a bit of in situ warming too. We're missing out further west as the air here is cooler. There has been a bit of a diurnal cycle over the past couple of days, where there's warm advection in the morning, then a veering low-level flow in the afternoon owing to strong heating over England leading to low-level cold advection and comfortable nighttime temperatures. Looks like the large-scale dynamics will give us plenty of cold advection in the next couple of days, and some welcome rain too.

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Freddie
Ystrad Rhondda