CELTIC and Rangers have been shown the yellow card by food hygiene bosses who inspected their stadium kitchens.

Inspectors who visited Ibrox and Celtic Park uncovered a number of food safety breaches and told the Old Firm clubs to clean up their act.

The teams from Glasgow City Council discovered cold pies, dirty and crumbling food preparation areas and faulty equipment at the grounds.

They visited Ibrox in October and found dirt on taps and a grease trap and a ventilation duct which needed cleaned.

The inspectors measured the temperature of pies being served at kiosks on a match day and said they fell below acceptable levels.

Their report said: “At the time of inspection it was noted that pies were left stored at ambient temperature for a time period that was much longer than the time period permitted in your HACCP system.

“Upon measuring the temperature of the pies at approximately 3pm it was found that their temperature was still below your critical limit value. However, it was discussed at the time of inspection that this may not have been the case on a warmer day.”

They also said an oven in the kitchen serving the Club Deck at the stadium was leaking and needed to be replaced. The inspectors also told Rangers bosses that flaking paint and a damaged floor and wall needed to be replaced.

Officials who visited Celtic Park found debris on the floor and dust in one of the kitchens serving a hospitality suite in the South Stand. Ceiling tiles had fallen off in the dish washing area of the Jock Stein kitchen due to the build up of heat in the area. The club were told to improve ventilation and replace the tiles.

In the same kitchen, the inspectors noted a hole in the floor behind one of the ovens and said the floor covering had to be repaired.

Kitchens which prepared food for the stadium’s lounges had broken and missing wall tiles and a peeling ceiling.

Both clubs received a pass in their hygiene inspection reports but did receive a number of recommendations on how to improve food safety in their kitchens.

The council inspectors also visited the national stadium at Hampden, which plays host to the Scottish national team and big- name concerts.

Their kitchens were found to be “broadly compliant” with hygiene rules but they were warned about faulty doors, walls, basins and work surfaces which needed to be repaired or replaced.

Celtic and Rangers declined to comment.