WHELF has established a number of sub-groups to help provide expert advice and to support WHELF in its collaborative tasks. The WHELF subgroups are:
- Archives & Special Collections
- Customer Services
- Learning & Teaching
- WHEEL (Wales Higher Education Electronic Library)
Each group has representation from WHELF member libraries and completes a terms of reference detailing membership and objectives with a Chair to convene and coordinate meetings and distribute tasks to group members. The work of the sub-groups is directed by the WHELF Action Plan and in turn the sub-groups refer any issues for discussion to WHELF.