Is there anyone in Norfolk or within 50 miles of Kings Lynn who can supply and fit a system that will enable me to access apple car play but will still enable me to retain all the existing functionality of all the electronic systems and retain the existing screen

Many thanks

Hi Melvyn

Welcome to the Forum

A friend who worked for a company upgrading and repairing Audio Systems for high end cars (Merc BMW Audi/VW) told me a few years back it will depend on the year and software version in the Infotainment system not the Manufacture/Reg year of the car. His advice was check using a Vin Decoder exactly what is fitted to your car then you will know what upgrade is possible/needed to enable it as a guide he gave me this

CIC (ID3/4)	~2010–2016	No	Needs MMI or Android screen
NBT (ID4)	~2013–2016	No (rare cases)	Some retrofits possible
NBT Evo (ID5/6)	~2016–2019	Software activation	Needs S6CPA + Wi-Fi for full-screen
MGU (ID7)	~2019–2022	Native wireless	Bluetooth pairs, Wi-Fi runs it
MGU21 (ID8/8.5)	~2022+	Native wireless	Requires Siri; setup differs

So it would seem if you have the the NBT Evo system then you need a Wifi Antenna and the software (S6CPA) and it should run on your OEM system, Note the Manufacture years shown are for the Infotainment systems

I had to fit a replacement Android screen in my E70 and all up very happy with it

If you have the NBT system Google the Register of BMW Specialists you should find a few near to you then check out prices

Hope this helps

Dave