I heard an interesting report on Radio Five last week from a Cambridge Professor explaining the core reason for Tata UK decline.  With the Chinese housing market in steady decline of late, the country had already committed to manufacturing an agreed level of steel.  The excess of which China exported into the EU (yes, to include the UK) at a price we could not compete with.  

The below article does however allude to some other compelling factors as to Tata demise in these shores; not least the lack of foresight shown by the EU.