Four materials on one object!!! Help!!!!

Hi There.
Hopefully somebody can help.

I had two objects with different materials on them and stupidly joined them into one mesh without removing the materials from each beforehand.

So now, my one object has two materials. (some faces show one material and the other faces show the second material.)

I cannot find anywhere how to remove all materials from an object so it goes back to the default.

In the material links and pipeline menu, if I ‘X’ the material it still shows ‘4 Mat 1’ so obviously I have four materials linked to this object.

Any help will be greatly appreciated.

Cheers, Matt.

Worked it out.

Cheers, Matt.