PART 2 - TRAINER'S LICENCES AND PERMITS FROM THE AUTHORITY - (C)3 to (C)20
17. Information about gelding a horse
17.1 A Licensed Trainer or Permitted Trainer must notify The Racing Calendar Office when a horse under his care and control has been gelded.
17.2 Subject to 17.3, this must be notified no later than the closing time for entries for the next race in which the horse is entered in Great Britain.
17.3 If the race is an early closing race, and the horse has been gelded subsequent to being entered, this must be notified before the next Scratching Deadline or confirmation of entry for the race.