After being told twice that I don't need blood tests for Folate, Ferritin & B12 I saw a different GP last week who finally agreed & here are the results.
Ferritin 99ug/L (30.0 - 400.0)
Vit B12 834ng/L (197.0 - 771.0)
Folate 2.2ug/L (3.89 - 26.8)
I have also been taking the following supplements for about a month.
Vit B12 Spray 1200ug daily
Vit D tablets 800iu daily + Vit D Oral Spray 3000IU/75ug
Vit K2 mk7 100ug daily
Selenium ACE+D daily
I am still incredibly tired & weary, but I do think I am beginning to feel a little bit better, though still waiting for referral to Rheumatologist to come through.