Car went in to the dealer today to let them look at the issue. They got both the Android and Apple phones working after applying update SA020 to the infotainment system (though strangely, all my presets were still there when I picked the car up from the garage) SA020 is meant to reduce lag when pressing various options, radio stations etc, and I think may fix a problem with USB ports - which seems likely given that the Android Auto and Apple Carplay both work now. Interestingly Android Auto is picked up from the left side USB port in the car. I didn't think that was happening before and I always though that the other USB was the correct one, can anyone confirm their experience? Very happy with Android Auto, now use it for phone calls too as well as maps and other features. Massive improvement over the base MG display and infotainment system. Thanks everyone who has commented, and to Jody for the cable which works. Thanks