"…who has entered into or works under … (b) any other contract, whether express or implied and…whether oral or in writing, whereby the individual undertakes to do or perform personally any work or services for another party to the contract whose status is not by virtue of the contract that of a client or customer of any profession or business undertaking carried on by the individual"
"If you are self-employed, running your own business and are free to work for different clients and customers, these regulations do not apply to you."