Well, I've now got a wait! ☹️
I ordered the monitors from Music Matter as they were doing a bundle (2 monitors, cables & stands) all for £302 on 13th Jan. Got an email to say they were ordered & that they were "On hold" with an estimated delivery date being 19th Jan (based on normal lead times).
Never got any further emails, but checking their website, I can see my order status. It never changed yesterday or today (still says "On hold"), so I decided to email them to ask what the status was. Got a short email back just saying "I have contacted the supplier regarding delivery of the Kali Audio LP6, and they are due in around the 1st of February. Apologies for the delay.". Nothing else.
I'm not in any big hurry, but it would have been nice to have been offered this info, rather than asking for it.