The price of school meals in Gloucestershire is due to go up by 10p to £2.20 next month.
There's criticism that the rise is coming when money is already tight.
However, Edwards and Wards, which supplies primary and special schools in the county, says it's necessary due to large increases in food, transport and staff costs.
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The Post Office said it was 'business as usual' but unions said Saturday's industrial action was getting solid support.
Workers and managers are to stage another strike on Saturday amid a long-running dispute over jobs, pensions and closures.
Cloudy in the West with a few showers. Sunny in the East but cold.