Section 4 | “Employment” for the purposes of the employment income Parts
From legislation.gov.uk
(1)In the employment income Parts “employment” includes in particular—
(a)any employment under a contract of service,
(b)any employment under a contract of apprenticeship, and
(c)any employment in the service of the Crown.
(2)In those Parts “employed”, “employee” and “employer” have corresponding meanings.