This is the illegal dumping of waste and if you are convicted of fly-tipping you could be subject to unlimited fines and up to five years imprisonment. Green Suffolk have prepared a guide on ways to prevent fly-tipping, read more at: Green Suffolk, stop fly-tipping in Suffolk
If you have employed a private waste disposal company (such as skip hire) you have a legal duty of care to ensure that your rubbish is disposed of correctly. You can check if they have the correct permits by calling the Environment Agency on 08708 506506 and ask them for an Instant Waste Validation Check.
If you find any fly-tipped waste, do not attempt to move it yourself, it could contain hazardous material. You should always report fly-tipped waste or if you find an abandoned shopping trolley, use the form: report an abandoned shopping trolley