Self-Employment Tax Return Advice and Planning

I've been freelancing as a consultant for three years now and my tax affairs are getting complicated. I need help understanding my obligations for the upcoming tax year, particularly around allowable expenses, National Insurance contributions, and whether I should be incorporating. I also want to review my last two years' returns to ensure I've claimed everything correctly. What I'm looking for: A tax advisor to review my situation, answer specific questions about my filing requirements, and provide practical guidance on the best structure going forward. I'd prefer someone who can explain things clearly and is available for follow-up questions.