BMW Bluetooth module, 8th generation, complete with antennae and microphone for £150 delivered.

Previously purchased off this site, but as usual, I never got around to fitting it.

Additionally I purchased the newer microphone, the 84 31 6 938 762 model with better noise cancellation.

The other purchase was the Audi 4E0 972 144 54 pin adaptor to make life easier when installing.

Complete with printouts from this site showing you how to fit the kit.

Hopefully this is of use to a fellow forum member.