Baird/Thorn EMI/Ferguson

Hi I'm having trouble with an old TV Set not sure of the make on the it has got Baird, Thorn EMI and Ferguson with 051A3 as the serial number which shows no results when I search for it.  Any way the problem is the contrast and brightness, I can't turn them up I have no original remote for it and the Universal one I bought doesn't control the TV too good.  There is no buttons on the set itself, I know it's the brightness cos' I can see a slight picture but it's really dark any help would be greatly appreciated.