I don't know anything about B. Sen or S. Bharadwaj. But if Arundathi Roy and Amartya Sen are protesting your arrest, I assume you should be freed. The People's Union for Civil Liberties, at first glance, sounds like a fine organization.
Apparently Sudha Bharadwaj is the daughter of Krishna Bharadwaj. I happen to have read her review of Sraffa's book - or at least the extracts that Harcourt and Laing (1971) reprint. As I recall from somewhere, she took a couple of years to write this review. When given Sraffa's book to review, she felt obligated to reread Adam Smith and David Ricardo. This was a perceptive understanding.
I first became aware of Krishna Bharadwaj's work, though, by stumbling upon her 1989 collection of essays. These are reprinted from such journals as Australian Economic Papers, the Cambridge Journal of Economics, and others. I found these essays quite good. I later read her 1978 lecture and the 1990 conference volume she co-edited with Bertram Schefold. Until the last few years, that conference seems to have been the most thorough assessment of Sraffa's contributions - not that economists such as Pierangelo Garegnani and Paul Samuelson could agree. She also has some applied work which I haven't read.
- Krishna Bharadwaj (1963) "Value Through Exogenous Distribution", Economic Weekly (Bombay), 24 August: 1450-1454
- Krishna Bharadwaj (1978) Classical Political Economy and the Rise to Dominance of Supply and Demand Theories, Orient Longman
- Krishna Bharadwaj (1989) Themes in Value and Distribution: Classical Theory Reappraised, Unwin Hyman
- Krishna Bharadwaj and Bertram Schefold (editors) (1990) Essays on Piero Sraffa: Critical Perspectives on the Revival of Classical Theory, Unwin Hyman
- G. C. Harcourt and N. F. Laing (editors) (1971) Capital and Growth, Penguin