Perhaps you know more than I do but my simple maths says that if the cash assets after the sale of the building are £5.2 million and if this grows over the next 6 months (assuming you are correct about bringing orders forward) then with approximately 40 million issued shares this yields well over 10p per share (without considering liabilities, exceptional operating costs and disposable assets).
Added to this is the possible shell value associated with a plc company with a valuable name and customer base, which can be traded on. I don't feel personally that 4p per share makes any sense and 10p upwards seems much more appropriate.