Need guidance to pay tax charge/penalty on over the annual allowance threshold

Please can I get some guidance on how to go about paying a tax charge with regards to going over the 40,000 annual allowance pension contributions threshold last few years ? I have calculated the value using the carried fwd balance for the last 3 years. Can someone advise if I need to fill in a self assessment form? Appreciate advice on next steps to pay this charge.

Hi
Please see Tax on your private pension contributions re this.