Hi, not sure how small you are...therefore my comment might be moot, but wouldn't you generally appoint a tax manager to deal with such issues?
In any case, I know plenty of people who would likely be willing to meet and give such guidance (in the hope of getting some paid services in return later)

(no such thing as a free lunch). [this assumes no one here has already made such an offer].
Anyways all I would say is DON'T FORGET ABOUT THE VAT AND CUSTOMS DUTY!!!!!!
I would start with looking at how things are done now (compliance wise - i.e. from input into system through to returns), what is claimed/what is not claimed, inter company charges and TP, where you are taxed on what % of profits, where you can shift tax to to pay less.
I don't do direct tax so that might be the worst plan ever!!! lol
If you need a VAT plan though, give me a shout
