I don't think that that mixture is adequate. Firstly, it seems to high in carbohydrates (too much seeds, high energy oats). Degus can become diabetic if they become overweight. Also, it lacks the extra Vitamin C they require. (Their bodies don't synthesize Vitamin C.)
I buy specially formulated degu food. There are two brands that I know of: Sunseed Sunscription Vita Degu Formula and Versele-Laga Degu Nature. I am in Canada, so that's what's available to me. There are dedicated degu forums that can help you find the right food in Scotland. Try DeguWorld forum or Degutopia.
Hope this helps.
Last edited by 16degus; 07-18-2012 at 04:23 PM.