If a company has incurred pre-start up costs before the company registration date - for book-keeping purposes, do you record them on the first date the company started trading as 'start up costs' or the actula date the expenditure was incurred?
Note that the client also is VAT regsitered therefore will also need to re-claim VAT on these costs.
For start-up costs I would record them on the 1st day of the company's trade so they appear in your accounts for the year.
Be aware that there are timelimits on recovering VAT, 6 months for services and that not all costs and VAT can be claimed. HMRC website has some good information on this.