Two things decide whether you win: which horse your ticket is allocated, and which horse wins the race. We control neither in your favour nor against you — here's exactly how both work.
Tickets are allocated in full-field rotation. For each race, the declared field is shuffled into a random sequence; tickets are then dealt from that sequence in order, and when the field is exhausted a fresh shuffled sequence begins. Two guarantees follow:
Each race's shuffle sequence is derived from a secret seed. Before entries open we publish the SHA-256 hash of that seed on the race; when the race goes off, the seed itself is revealed. Anyone can verify that the published hash matches the revealed seed and that the allocation sequence is exactly HMAC-SHA256(seed, race_id) applied as a Fisher–Yates shuffle — proving the sequence existed before any ticket was sold and was never altered.
At 9.30pm one entry from all of the day's entries — paid and postal, winning and losing alike — is selected to win £250, by the same commit-reveal system: the day's seed hash is published before racing begins, revealed at the draw, and the winning entry is HMAC-SHA256(seed, date) mod entries, verifiable by anyone.
Winning tickets are decided solely by the official result as returned by the racing authorities, including any amendments from stewards' enquiries before the result is made official. We take no position on any race and our income is the same whichever horse wins.