Founded in 1837, the University of London Library (ULL) is the central research library of the University of London with particular research strengths across the broader arts, humanities and social sciences. With the development of information and communications technology, it has become a hybrid library, offering access to electronic collections but also extending access to services and its physical collections through its website and online catalogue. Research libraries now face the challenge

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... of supporting distance learning. The ULL has risen to this challenge by being a partner in the development of webenhanced distance learning by the University of London External Programme's Virtual Campus Project. To do this, the ULL has initiated the Virtual Library Service (VLS) Project. Within the research-focussed University of London, the ULL has anticipated the potential research-support needs of its students. It is also leading a separately funded Virtual Research Environment (VRE) Project on behalf of the University Libraries Committee to address these needs and inform the University of London's activities in the virtual sphere. The University of London has created the Electronic Library Projects Team (ELPT) to undertake the VLS and VRE projects and ensure that they develop along complementary lines. This paper outlines how the ULL is supporting teaching and research in an online environment through the development of its VLS and VRE models. INFORMATION RESOURCES FOR DISTANCE LEARNERS The initial project undertaken by the ELPT is to develop a dedicated VLS model to support the information needs of students registered with the University of London's External Programme, many of whom are studying at a considerable distance from London. Once fully developed, the VLS will offer access to a range of information and learning resources and related services as University of London Library Virtual Library Service This paper is adapted, with additions, from a chapter in Libraries Without Walls 4: The delivery of library services to distant users.