Morning Graham
Welcome to the Forum
From memory (always a dangerous thing) you have 2 Cam position sensors and 2 Vanos solenoids I think you may be looking at the inlet cam sensor.
I rebuilt a version of this engine a few years ago for a friend of our sons if I remember correctly the left Cam Position sensor has a direct plug connection the Right Cam (inlet) position sensor has a lead attached. The Vanos solenoids are hidden under and at the back of the Vanos unit
Take a look at www.realoem.com a BMW online parts list put the last 7 digits of your Vin into the search box and it will call up your model. Then Engine section and Vanos sub section when you have the Part Number if you double click on it you should get a list of alternate part numbers and models it was used on. Then google the part number for best price/supply.
Also worth looking at wwwpelicanparts.com an American site but their articles section has some really great "How Too's" with pictures
Good Luck hope this helps
Dave