Interesting target INR by the CAA - 'target INR is likely to be 1.8-2.5 (with an ideal 2.0-2.3)'. I reckon the term 'likely' makes it somewhat flexible. The FAA says one needs to be stable between 2 and 3.
When reading the last paragraph, I canīt imagine any potential employer would hire someone who is on Warfarin. IMHO thatīs neither practical nor reasonable. Checking INR every day when on a seven day duty tour? And if one of the values is outside the range? Sorry, canīt fly today. For comparison, the FAA requires monthly INR values of which 80% need to be in the target range. Thatīs it.
Why is it so much more complicated with the CAA?
How about ppl taking Xarelto instead of Warfarin? That makes INR meaningless. I imagine that would be the way to go under those circumstances. Talk to your doctor and the CAA.
Good luck and let us know how things work out.