liability subject to compulsory insurance

any liability required under any of the following enactments to be covered by insurance or (as the case may be) by insurance or by some other provisions for securing its discharge:

1. (a) section 1(4A)(d) of the Riding Establishments Act 1964 (or any corresponding enactment for the time being in force in Northern Ireland);
2. (b) section 1 of the Employers' Liability (Compulsory Insurance) Act 1969 or Article 5 of the Employers' Liability Order (Defective Equipment and Compulsory Insurance) (Northern Ireland) Order 1972;
3. (c) Part VI of the Road Traffic Act 1988 or Part VIII of the Road Traffic (Northern Ireland) Order 1981;
4. (d) section 19 of the Nuclear Installations Act 1965.24