Burning any material on bonfires or in containers releases toxic chemicals due to the relatively low burning temperature. While burning can be a convenient way to get rid of waste for you, they can cause pollution and a nuisance to others. The smoke can also cause a more serious health hazard by irritating people’s lungs and triggering asthma attacks.
It is against the law to burn any trade waste without an environmental permit or exemption from the Environment Agency. All producers of trade waste must comply with their duty of care for their waste – it must be disposed of appropriately. The best way to do this is to use a licensed trade-waste contractor.
See Tewkesbury Borough Council website:
https://www.tewkesbury.gov.uk/pollution