Clare, thank you for your reply.
If the individual sells the business before coming to the UK and becoming a resident for tax purposes, then any gain from sale of that business abroad would escape UK tax. Any funds remitted would also escape tax provided these funds were deemed capital before arriving into the UK.
If the individual has relocated to the UK and now wishes to bring that money into this country then she has a choice of electing to have -
all worldwide income and gains liable to UK tax on arising basis
elect for remittance basis alternative tax treatment
The remittance basis of tax treatment is covered under Sec 5 (pages 22-28) with examples of both less than/more than £2,000 unremitted foreign income/gains . here is a link to HMRC 6
Monies transferred would form part of initial capital injection/director’s loan.
She can invoice her customers without paying herself a wage yet. Instead, she may wish to consider paying herself a dividend at say quarterly intervals.
I hope this is helpful and answers your question.
If you have any other questions, please ask me before you rate my service – I’ll be happy to respond.