Dear jst2878, tonycajjo, manny4.6 and fast4d..Thanks All!!
Problem solved, it was the rear right height level sensor:
Took off both rear wheels and inspected both Height Level Sensors, R/R had a crack in the housing.
Purchased sensor for £68.00 GBP from BMW Dealer
The car is still jacked up the rear wheels are off, I have disconnected the battery.

1. Removed sensor control rod linkage nut
2. Removed electrical plug
3. Removed 1 x mounting bracket nut
4. Removed both sensor and bracket
1-4 takes about 15 minutes with rear wheels removed (9 & 10mm ring spanners)

On the bench..remove the 2 'Allen key' bolts holding the bracket onto the sensor and replace sensor..

Re-did 4 - 1 above put the wheels on and off jacks before I reconnected the battery, when I reconnected the battery the car slowly levelled out. Beautiful..

Thanks All..
Best Regards Paul..

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