Clerk of the course Andrew Tulloch called off the planned 7am inspection at Aintree after the forecast overnight frost failed to materialise.

He said: “We are all systems go. We didn’t have a frost and we are definitely racing.”

Huntingdon had patches of standing water on the track yesterday after a brook running through the centre of the racecourse burst its banks.

Fiona Needham, clerk of the course, was worried about the effects of the water combined with a forecast frost but although temperatures did dip below freezing overnight, there are no problems at the track.

She said: “We have passed the inspection and we are racing. Basically, we were down to minus one but the frost has not got into the ground.”

However, leading fancy Edredon Bleu will miss the feature race at the track, the totesport Peterborough Chase, due to the testing ground.

The 12-year-old gelding was due to bid for a fifth success in the race after winning the Grade Two contest between 1998 and 2001 but trainer Henrietta Knight does not want to risk him on the ground which is currently described as good to soft, soft in places.

Miss Knight told The Morning Line: “The groundsman told me that the area between the ditch and the corner will be very deep and gluey.

“His owner Jim Lewis doesn’t want to subject him to that hardship.”

Windsor clerk of the course David Mackinnon was forced to call an unexpected precautionary inspection for 8am after the track was hit by frost.

Conditions improved significantly at the Berkshire course though and their meeting, which features the Grade Two Life From Coloroll Chase, goes ahead as planned.

He said: “A bit of frost had got into a couple of patches of ground but we are fine for racing. Temperatures have been rising and we have no problems.”