The trouble is that no-one makes a distinction between small business and large business: What you apply to one, you apply to the other. I've no real grudge against the megacorps paying less tax as they contribute much more in other ways by giving people jobs to earn money and pay PAYE & all the stuff they then buy. All the other changes I'm relatively comfortable with tbh, some of it makes sense like the dividend stuff (even though that affects me directly) in terms of fairness. Business rates don't affect me, however I'm very much against the changes the Tories made, but do I see Labour changing them back? Nope.
What worries me is that Labour are going to aim their guns not just at business, but at people earning over £26K. No-one would call £26K a fortune, hell in parts of the country you'd struggle to live off that full stop.
If Labour and that do go after Starbucks et al, that really is going to be painful for people like me.