I went out and bought a new pair of electronic scales to replace the old mechanical ones we have at home, as I thought that they would be more accurate, and...... Horror of Horrors they show that the old ones were underweighing by 8lbs .
I've therefore had to adjust my start and present weight in my profile and although I've still lost the same amount of weight this means I was even heavier before starting this WOL.

A little bit heavier than I thought......
Ken