As an employee of an umbrella company, YES, you can be entitled to Statutory Adoption Pay (SAP) and Statutory Adoption Leave (SAL).

Information regarding eligibility, rights and when and how to claim are available at:

https://www.gov.uk/adoption-pay-leave/overview

You may also be entitled to Shared Parental Leave (SPL) and Shared Parental Pay (SPP) where your baby is due on or after 5 April 2015 or you adopt a child on or after 5 April 2015.

https://www.gov.uk/shared-parental-leave-and-pay

Umbrella Companies employ Agency Workers and help ensure they benefit from all your Statutory Employment Rights.