HMRC Appeal

I have received a tax bill from previously understated income from a Tax Avoidance Scheme I was on 8-10 years ago. I accept now that I owe some tax but wish to challenge the figure I owe. The Letter has statutory right of appeal. I have spoke to another company who have advise this: The appeals process is 3 stages. Appeal to HMRC - The initial appeal will be sent to the officer who has issued the closure notice Internal HMRC review - Following the initial appeal we will be in a position to request an internal investigation into the decision reached Tribunal Appeal - This is the first step in the appeals channel which is outside of HMRC, whereby an independent Tribunal may consider the appeal Additional Step - Engaging in Mediation following the submission of a Tribunal appeal to agree upon a settlement of the liabilities. The steps outlined above offer us an opportunity to challenge the figures Also a review of my self-assessment tax account will be appropriate to ensure that there are no additional penalties accruing. I would prefer a UK based tax expert who is familiar with Tax avoidance schemes and how HMRC is going after people who have used them in the past, so I don't have to explain any of that. However, I am not ruling out other countries. I would like to find one in the next 2 or 3 days. I have been quoted £5700 to do this appeal and so I am looking for a cheaper tax lawyer to do this for me, as I cannot afford that much. I need to put in the appeal within 30 days which is approx 20th Oct