M40i Tyres - SE England, UK

Looking for a recommendation on new tyres for my X3 M40i. A couple are approaching the limit so probably just going to change all 4 as currently it has Alenzas on the front and Conti SportContact 5s on the rear. Not sure why, we bought it like this.

I was ideally looking for an all season tyre and would have gone for something like a Michelin PS All Season 4 or Continental DWS06 as they seem highly recommended but turns out that isn't really an option here in the UK for some reason? I can't find anyone that stocks them anyway.

Mostly driving on terrible roads full of potholes and looking for something with a bit more comfort and less road noise than what we have currently. Half tempted to just put MPS4s on it but its our main family car and I feel like I'll regret it the 1 time it snows here every 2 years or so.