Thanks so much for your reply :-) I found that when I clicked on the 'Buy' link on that site it didnt' work, but I managed to get the same BP monitor from Mothercare of all places!!
I'm preparing to TTC but not actually doing it yet. I'm a bit worried (although only had the BP monitor 1 day!!) that I might be borderline hypertensive. I had suspicions as whenever I've had my pill BP checks my lower number has always been in the 80s, often 87-89. Today in the morning it was 115/83 and this evening at about 7pm it was 123/88. I'll monitor daily to look for patterns and try to get healthier! I'm not overweight but I do struggle with energy levels for exercise and whilst my diet isn't bad it prob has too much sugar in it.