I very much doubt that - not the night closure, that was a fact, but during the summer the airport was H24 for the most part, and you only have to look back through BHX movement records to find the FedEx continued to operate nightly, and numerous AN12 and AN26 movements amongst others, presumably carrying at least 1kg each have operated - so the all cargo number cannot possible be correct (0 tonnes for the whole of the year!).
Surely businesses like Blue City couldn't have survived without handling a single freighter during the whole of 2014.