Supplies under this heading are largely represented by premiums, brokerage or fees. What is or is not insurance is clearly important.
In the absence of any statutory definition, in Directive 2006/112, the Value Added Tax Act 1994 or the Financial Services and Markets Act 2000, the matter falls to be construed according to the principles of general law. In Medical Defence Union Ltd v Department of Trade  2 All ER 421 at p. 424, McGarry VC identified three elements, which had to be present.
(1)The contract must provide that the assured will become entitled to something on the occurrence of some event.
(2)The event must be one which involves some element of uncertainty.