Thanks for all the replies guys - it is really hard the value this car as it's quite high spec but it's the less desirable SE! Looking on auto trader there's nothing close to my car for miles spec etc so looking at the other SEs I recon 7.5 is the very minimum but could probably sell for as high as 8.5 should someone want the spec and not be too fussed about the m sport.
The petrol equivalents which I want to replace her with are a bit cheaper so I shouldn't lose any money on it anyway
