This depends on your agreement with your subcontractors. Labour-only subcontractors (working under your direction) can be included on your policy of insurance, for work they provide under contract with yourself and your business only and should be included in the total numbers you provide in this application of insurance.

Bona-fide subcontractors (working under their own direction) will have to have their own insurance cover and cannot be included on your insurance policy but you will be obligated to retain proof of their insurance.