A business model comparison for Sainsburys and Tesco

this essay choose two companies to make a comparison(Sainsburys and Tesco), and identify from the annual report what its business model is.
it needs to define the business model, identify what the routines and capabilities are and state how the business is governed,Identifying Business Models This will also be part of this essay.

You might find this article useful as background reading
Alexander Osterwalder, Christopher L. Tucci & Yves Pigneur (2005) Clarifying Business Models: Origins, Present and Future of the Concept Communications of the Association for Information Systems Volume 15

used sources in attachment which may bring some ideas and case evidence to discuss.