Just been grappling with mobile billings, Mrs Ham's and my bills are now £16/month total (4Gb since you ask), as part of my overall strategy I needed to sort out the dual sim aspect of my Pixel 4, so I can take advantage of PAYG when travelling to strange countries.
The Pixel 4 has eSim and physical sim capability, and EE supports eSIM, so far so good. Easy ordering, again, good. eSim is great, all you need to do is scan in a bar code, so how do you think I'm going to get this new fangled system? Yes, you've got it, in the post.