Moonshine

Dear HMRC, Please could you advise on this so that I can understand if I can use the Carry Forward rule (pension - PTM055100) : If I have made a lump sum payment of say 80,000 to buy additional pension in a LGPS scheme that i've been part of for several years. The LGPS says that I have to claim back any tax via Tax Return (no relief at source). Am I allowed to use the Carry Forward rule ? For example, If my gross salary was 35k in 22/23 but my employee pension contibution was 2k and employer contributions were 3k - Then in 23/24, if my gross salary was 44k and my employee pension contibution was 4k and employer contributions were 5k but I also paid a one off lump sum of 80k to buy additional pension. Can I use the Carry Forward rule to take any unused allowance from 22/23 over to 23/24 and claim tax back via SA return for 23/24 ? So looking at this example, in 22/23, is my unused allowance (35k - 2k - 3k = 30k) ? Can I carry this 30k forward to add to my maximum allowance in 23/34 (44k gross salary) ?