I find it hard to believe that one set of ink cartridges costs over £100.
Anyway I suppose that isn't the point. You need legal advice. Can you get some? CAB, or solicitors free first hour?
I don't know but I'd guess you'd get off with a non-custodial sentence for theft if it's the first time you've been caught and you get a judge who thinks your children deserve continuity of care from their mother. Have no idea about driving without a license.
I find it hard to reply to you without some reference to how repugnant I find your actions. I'm sure there's a sob story but I'm glad you didn't write it or expect us to sympathise.
I can't help wondering though how you got to the point where you decided you were entitled to ignore all rules and laws, and why you decided you are more important than other people? I guess it made sense for you at the time. I guess you managed to prioritise your own needs over the risk of jeopardy to others (driving), or that it's only big business that loses out so who cares (stealing).
That kind of attitude isn't just a one-off, it's a way of life. Unfortuneately.
I hate the word 'entitled', but that's what thieves and cheats and law breakers are, they think they're entitled to put their wants above anyone else's rights. Worming around rules set to make society run smoothly, relying on everyone else's good nature to absorb their own bad attitude and behaviour. Not nice, at all.
I wonder if you're happy to be seen as part of that group of people? Or whether you square it in your head as being somehow different, an exception.
Anyway, I'm sure you'll come out of it fine, whatever my person feeling on the matter.