I've just worked out the Boxing day reference (see above -the 'mon' announcement!)
I accept what you say abouth the differntial in the current (70p) price not being near the take-out price at the moment, but if the market were to believe the statistical likelihood of the deal, I would expect the current price to be fluctuating between 76p-80p.
It is precisely beacuse KCM are doing very well themselves that they feel that they want to get the best price, resulting in tough negotiations taking place.
I suppose HCC have to look at other considerations other than just the money (directors, staff, unions, residents) and these additional elements are adding to the prolonged discussions.