You might want to check out Martin Brungards water knowledge page should give you some pointers, the speadsheet associated with that is also very useful.
Some of the major ions you would be interested in are Calcium, Bicarbonate, Magnesium, Chloride, Sulphate, Sodium
Looks like on your report you have
Looks like you might want to email them for bicarbonate, calcium and magnesium.
I'd expect them to be pretty low, looks like you've got quite soft water which sounds about right, not too many chalk downlands in central scotland and i'd expect most of your water comes from river runoff, (upper clyde, reservoirs).