Think about how your separation will impact on the business and others affected by it, such as employees and suppliers.
If that partners is involved in the company and one of you is going to leave it, remember to agree what is to happen to their shares. If that partner is a director or company secretary, this can easily be changed by completing a form and filing it at Companies House. See www.companieshouse.gov.uk for more details. You may want to seek further advice from a solicitor and/or accountant to help you come to a decision about what to do – see useful links