Placing a bet on the finishing position of a horse

Hi, just posting this as I was sure today that on the ATR odds site (or another) it showed a bookmaker who offered odds for a horse finishing in a specific position.
The example I took note of was 6/1 for Masterpaver finishing 2nd, and was sure that this was SkyBet. Now when I look at tomorrows racing I can't see any bookies who take this types of bet.
Does anyone know of a bookmaker who accepts bets on a specific position in the race of a horse i.3. 6/1 to finish 2nd, 13/2 to finish 3rd?
I'm sure I wasn't dreaming this :-S