Godolphin drugs case charges to be issued with a hearing expected on Thursday The 11 positive tests were taken by BHA officials who visited Al Zarooni's yard specifically because two horses he trained had tested positive for banned substances during 2012. Al Zarooni was fined £2,000 last August for those offences; he now faces a life ban from the sport in Britain. BHA drug testers make around 700 stable visits a year, prompted either by intelligence or previous breaches, as in Al Zarooni's case. In addition, roughly 7,000 horses are tested on race days. Steroids are generally used to strengthen a weak horse but the Rules of Racing prohibit them from being used on a horse in training, whether it is due to race soon or not. Al Zarooni said on Monday that he was unaware that he had breached the Rules. Al Zarooni runs one of two stables near Newmarket at which Sheikh Mohammed's horses are trained. The BHA said yesterday it had no plans to test horses at the other Godolphin stables where Saeed Bin Suroor is trainer. "They are separate trainers," said BHA spokesman Robin Mousey, "and we wouldn't link them because of a common owner as a result of this. It doesn't however rule it out though. We reserve the right to test any trainer's horses at any time. The Godolphin drugs case has come as the biggest shock in British racing in years. Considering Godolphin's clean image and global reputation for excellence, nothing could be more surprising than to see the stable caught up in such a scandal. For Sheikh Mohammed, a respected foreign leader, it is an acute embarrassment. Only recently he withdrew his support of the Breeders" Cup organisation over their refusal to crack down on the use of the drug Lasix; Darley director Ollie Tait resigned from the Breeders" Cup board as a consequence. It appears that none of the 11 horses found to have been administered drugs had been in Dubai over the winter. They had been residing in Britain. Questions have been asked as to why a trainer might use steroids on his horses. Speaking to BBC Radio 5 Live, Lincolnshire-based trainer James Given, who is also a qualified vet, said: "It is, without doubt, a performance-enhancing drug. It's not just active while the drug is in the body - and certainly many of these drugs will persist in the body for several months - but it's the effect on the muscle development beyond its natural capacity. The number of horses that tested positive shows that it wasn't what one might term an error with a single horse. Even when the case is resolved, many questions will remain and the future for Godolphin is unclear. Sheikh Mohammed must decide whether to install a replacement trainer if, as expected, Al Zarooni is disqualified, or whether to incorporate them into the care of bin Suroor.