your question looks like its been here since feb 07, "self employed" is a term that can describe, "the way a job or contract " is deployed, regarding "TRADE PLATERS" , the "self - employed driverS2 , are also LIABLE for THIER OWN N.I contributions , and INLAND REVENUE returns, meaning they are obliged by tax law, to PAY TAX...no surprise, no deductions for N.I , and TAX are made at SOURCE, so the "SELF EMPLOYED DRIVER" , is liable for tax, late payment surcharges etc etc.... for delayed TAX payments, and so on and so on, if you are self employed, the COMPANY CONTACTING YOU DIRECTLY, do not have to make provisions for "TAX/N.I " etc...... unless they change you from SELF-EMPLOYED , to "PAYE EMPLOYEE STATUS" , some of these companies DEDUCTED a nominal amount for CONTRIBTION to DRIVERS MOTOR INSURANCE POLICY COVER, which is nothing to do with N.I contributions, some times called STAMP ............ even MANAGERS of LARGE NEWSAGENTS are deployed on "SELF EMPLOYED BASIS" , that nothing to do with franchising, its basically a status for tax purposes......liabilty.. end of answ/Qn