Morning Malcolm
Welcome to the Forum
First check is does your car have VDC suspension ? Next check what was its year of manufacture to check model E70 F15 or F85 ? All 3 are possible for a 2014 registered car.
If E70 the top mount has for want of a better description a couple of spongy washer like pads, they just fail and you get a knock sometimes when turning easy check under the centre nut of the top mount there is a big washer under that is the sponge/fibre pad easy to see and not hard to change. F15 and F85 don't have them but worth checking the top mount anyway
If it's a rotating knock also worth checking the front drive shaft
Good Luck tasty motor by the way
Dave
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