  We initiate a study of the bootstrap programme for field theories with BMS
symmetry. Specifically, we look at two-dimensional field theories with BMS3
symmetry and, using highest weight representations, we construct the BMS
bootstrap equation by formulating the notion of crossing symmetry in the
four-point functions of these field theories. In the limit of large central
charges, we find analytic expressions for the BMS blocks that are the basic
ingredients for the solution of the bootstrap equation. This constitutes, to
the best of our knowledge, the first example of the formulation and significant
steps towards the solution of a bootstrap equation in a theory which is not a
relativistic conformal field theory.

High Energy Physics - Theory