OK I know the answer to this question! After years of multiple pricks to get tiny bits of blood out I did a lot of research and boy am I glad I did! This lancet and device are the only ones in existence that need just the tiniest amount of blood! I still have trouble in the winter and need a little massaging and heating up of fingers but compared to all the previous devices, these have stood the test of time for me. You can get them on Amazon.com not sure about Amazon UK. I can't seem to get the lancet and the device here in Europe either but the needle and strip supplies are freely available at the pharmacy here in Italy. You need to buy the lancet and the device separately as the lancet that comes with the device is not the one you want.
Freestyle LITE blood glucose monitoring system - (there is another that says Freedom Light but I've never used it, I think it is larger than the Lite only)
One Touch DELICA lancing device - you will need to get the One Touch Delica lancets to go with it
I read an article by VeryWell Health about it but I can't seem to link it here, however you can google and it should come up
Glucose Meters That Require the Smallest Samples
I hope this helps!