The selections by Ernest, Kevtherev and Westport to Hove were non-runners.
The first race tomorrow is the 12:40 at Haydock.
Friday's National Hunt meeting at Haydock must pass an inspection on Thursday at 4pm with parts of the course frozen, but officials remain confident the meeting will go ahead.
Officials at Haydock are banking on an improved weather forecast to save their jumps meeting on Friday. Clerk of the course Kirkland Tellwright inspected the course twice on Thursday and will look again at 7.30 in the morning as the track was still frozen in places.
HAYDOCK has called off today's meeting before the scheduled 7.30am inspection due to the track being frozen in places. Taunton will have to survive a 10am inspection to avoid a similar fate.