Where a company can meet its financial obligations, the process of closure, though complex, is reasonably straightforward.Once you have chosen the date on which you wish your company to cease trading, you should not process any more transactions other than those required by the closure process. Then ensure that all creditors have been paid in full. If the company cannot pay them, they need to be notified.
You will need to notify HMRC of your intention to cease trading as early as you can, though it is worth holding off submitting your final accounts for a few weeks or months to ensure that any late-occurring expenses can be included. If you are VAT registered, you will need to cancel your registration. You will also need to run a final payroll to obtain P45s for yourself and any staff you employ, as well as submitting a P35 Employer Annual Return and paying any outstanding PAYE and/or NICs. More details on all these requirements can be found on the HMRC website.