I sent the blood service an email today...
Here's the response...
Dear Mr Stuart *******
Thank you for your recent e-mail.
DIABETES:
You may donate as long as EITHER you have been diagnosed with pre-diabetes (abnormal
blood sugar) or gestational (pregnancy) diabetes as long as you do not require
treatment at present or your diabetes is controlled by diet alone OR You are taking
the same dose of the same medication for 4 weeks or more and feeling fit and well
and in either case the following does NOT apply
You are not under investigations
You have needed no treatment with insulin within the last 4 weeks
You have not suffered from Heart Failure
You are not under investigation, on treatment or under follow up for renal (kidney)
impairment
You have never had ulcers or wounds related to a loss of sensation
You have had no amputation or blood vessel surgery
You have never had gangrene
You have no problems with feeling faint, fainting or giddiness
Please always mention medication you are taking to the staff at session.
These guidelines are the same for whole blood and platelet donation.
If there is anything we can help with or that you would like to discuss further,
please do not hesitate to contact us again. We would be pleased to help if we can.
Yours sincerely
Helpline Administration Team
Hope this answers your question! ... it should do! lol