Homark gas hob,4 burner requires replacement knobs and knob facia?

Just moved into house with Homark 4 burner gas hob, brown finish with knobs on right side panel. The hob is in excellent condition except for the knobs,ignition button and panel facia which appears to have been sprayed with something that has taken the finish off the knobs and left the panel looking as though it has splashes all over it.
I cannot see a model number but the panel incorporates the knob guard on its left side, I don`t know if it is removable, it measures 460 mm x 65mm.
As the house has been empty for a long time it has hardly been used but the panel and knobs spoil the look of the hob.
Hope you can help me, thankyou.