You can use the All 4 app (on your laptop or maybe your Android device. iOS devices can't install UK apps from the US store unless you change it) but you will need to use a VPN. DotVPN works well for Chrom(e/ium).
Yeah, ExpressVPN (not affiliated) works fine. Use "UK - Dockland" and you won't have any problem. It also gives you access to all the other wonderful shows on All4, BBC iPlayer, as well as Netflix in the UK.