A question for those who have a better memory than me.
In the old days when we had to pay a deduction for tax, levy etc you had the choice of paying it on stake or returns. If you chose the latter did the deduction take place on total returns including stake or just the winnings not including stake. So if you bet £10 on a horse that won at 10/1 and the deduction was 10% did you have £10 (just winnings) or £11 (total returns) deducted ?