That's interesting, because I am using Arcsoft Photostudio 5.5 which allows me to use a 'simple mode' to scan negatives in. On all the photos I have done I have ticked the 'Remove dust and scratches' plus 'Backlight correction' boxes, but the set that the third example shot belongs to I used an additional option 'Fading correction'.
The Brighton night shots are certainly poorly exposed on the original photographs and negatives - a combination of poor lighting conditions, a moving target and of course the camera technology at the time not being as good as it is now. Actually, now I come to think of it Dad was forced to change his camera at some point in the early 90's when it was stolen during a burglary on our house, perhaps that would account for the difference in later daylight shots.
The final picture is actually a crop of the original to bring 41708 into the centre of the shot, so there will have been a slight loss of quality.
That's a good bit of advice about the different film types - I will have to experiemnt more with the scanners advanced settings.
Thanks for your help
Regards,
Dan