I am in Essex, not sure where you are based. I’ve not heard of Barkers but do have a tip for you.
Whatever microblading course you do will be worth nothing if you are not level 4 qualified.
It won’t be long and is already in place in some regions, particularly London and surrounding areas that you will not get insurance or a license to practice.
If you are level 4 qualified great if not, do that first and then do a microblading course.
My course did both at the same time.
Good luck. Xx