  We discuss certain features of cosmology in a generalised RS II braneworld
scenario. In this scenario, the bulk is given by a Schwarzschild-anti de Sitter
or a Vaidya-anti de Sitter black hole in which an FRW brane is consistently
embedded, resulting in modifications of the 4-dimensional Friedmann equations.
We analyse how the scenario can be visualised and discuss the significance of
each term in these modified equations both for early time and for late time
cosmology. We further analyse the perturbation equations, based on Newtonian as
well as relativistic perturbations and show that the scenario has the
potentiality to explain structure formation by the ``Weyl fluid'' arising from
embedding geometry. The results thus obtained are confronted with observations
as well.
