Completing CT600 - carrying back a loss
My client has made a £5k loss for his 2011/12 AP.
I want to carry this loss back against his 2010/11 profits of £12000
I understand what I need to do in theory, but I can't seem to work out how to complete CT600 - I have put zero in box 3 (no profit), and have put the total loss in box 30 and box 122, but I have no idea where or how to show i'm carrying back the loss against last years profit.....have read and re-read HMRC guidance and can't make head nor tail of it.
sorry - probs a very simple question but have never done a carry back before....