Whether you operate as a sole trader or as a partnership, you need to let HMRC know within 3 months of commencing self-employment that you are in business. Failure to do so results in automatic fines. Apex Associates will complete all the forms for this, set you up with national insurance payments and if necessary complete the VAT Registration forms for you.
You will also have to deal with your tax affairs on a self-assessment basis – and again Apex Associates can help you, working with you to plan your tax affairs, completing your accounts and submitting them to HM Revenue & Customs in a timely and efficient manner.