Sales were down because the company has moved away from selling anything and everything to higher margin work. Shareholders were advised of this at the interims in March. A company can have sales of £5.3 million and make a loss of £1 million or it can have sales of £5.2 million and make a loss of £23k. The second of the two is the better. This is what NEB have done. In the final results they stated they are trading ahead of this time last year so either sales are up, losses are down or they have moved into profit for the interim period.
There is always a dip in sales when a company cut backs on less profitable to work.