Thanks for your response and the additional information
Then this is where the problem lies - as your combined annual income exceeds the basic rate threshold and you were onloy charged BR tax - some of it should have been charged at 40%
Im sure being sent numerous P800s is just confusing - if you would like me to look at the figures and make a true calculation for you then please advsie for each year for 2012 to 2016 your pension (and any tax deducted) and the PAYE source of income and the tax deducted.
Do you have any compnay benefits with your employment such as company car or medical benenfit etc
OR do you incur any expenses through the performance of your duties that are either reimbursed with your salary (so subject to tax) or not reimbursed
Are you under 65 ?
I can then calculate the position for you - and see if we can help you find some recourse.
I also would like to know that when you started employment did you
1) Hand then any P45 or did you fill in form P46 new starter - if you completed form P46 did you indicate that you had another source of income (as in the pension)
2) Discuss at any time with HMRC the fact you had a pension and employment and try and ensure that your tax position was accurate?
We may be able to see if HMRC or the employer were at fault to mitigate some of the tax