I'm 37, and I'm under the care of Wishaw too, and to be honest, they actually provide excellent care. And in fact a lot of places only give you one scan in total (unless theres a reason for more). I have never heard of any health area where you are scanned at 8 weeks as a matter of routine - everyone on mumsnet seem to be scanned early only if theyve had previous pregnancy problems.
I've had 2 miscarriages, so I got a couple of early scans at the early preg unit at Hairmyres, EK. If you phone any of the EPUs, they may take you in for an early scan if you explain your concerns.
HOWEVER - and I warn you, I am going to be very blunt here - the reason that pg women are not scanned routinely before 12 weeks is that the scans can give false hope, as MOST miscarriages happen within those first 12 weeks. With one of my miscarriages, we saw a healthy, strong heartbeat at 8.5 weeks and felt over the moon. I lost the baby at 9 weeks, so I know all about false hope, believe me. In the end, the scan didnt prove anything or reassure me in any way. It just made me negative about having early scans this time round.
I dont mean to scare you at all, because there is a much higher chance of everything being fine with the baby, so try not to worry about every possible problem that could happen. I know thats not easy. But really, there is no reason to get lots of scans at all - they will not change the outcome in any way.
We also got a high risk of Downs, but - touch wood - the scans since have reduced the risk, as all seems to look ok with the baby. But I now wish I hadnt had the blood tests, as I would still have continued with the pregnancy regardless. My point again is, monitoring the pregnancy at 13, 16 and 20 weeks is enough to be able to check that all is ok, and if it's NOT, then you will be offered more tests/scans etc if need be. There is also a reason why they wait till 16 weeks to check for Downs and spina bifida, but i'm not sure what the reason is, to be honest.... Probably worth Googling.
NOTE - when I got my scan date, I phoned them and said that I would be nearly 15 weeks when I got my scan, so they changed it to 13 exactly. When you get the date through, give them a ring and say youre on holiday or away or something, and they'll bring the date forward a bit. I agree that 14 weeks is daft.
Best of luck to you both :)