Well today, I visited an lfs outside my area which stocked the Aq pharmaceutical freshwater master test kit. Sick to death of my neutrafin drops and insoluable dry tabs, I got it.
But, the surprise was the PH came out at only 7.4 (tank and tap) compared to both the other kits which had readings of around 8.0 - 8.2. Hmmmm

It seems quite a gap. Also the GH is way high as London is built on limestone so I would have expected the PH to be a little higher based on that, too.
Would you guys rely on the Aq P above the others?