Supply of Machinery (Safety) Regulations 2008
For machinery to be supplied for sale it has to be designed and constructed to meet minimum safety requirements for safety. This will include CE markings and a Declaration of Conformity issued by the manufacturer to show compliance (Regulation 7).
The definition of machinery is quite wide ranging and is described in Regulation 4. This covers items such as assemblies with a drive unit (which is what is typically considered to be a machine), equipment components, chains and ropes for lifting and drive shafts.
The Supply of Machinery (Safety) (Amendment) Regulations 2011 included a range of revocations and additions, including that of Machinery for pesticide application (included in Part 1 of Schedule 2).