Im trying to identify cells that contain certain text using isnumber. I have
a column (M) that contains UK postcodes such as ST6 2JH, DE22 1BH, YO18 5DS
and many more etc. By using =ISNUMBER(SEARCH("YO",M2)) I am able to find the
YO in cell N2 but I need to expand it to find other postcodes as well, e.g.
DE. Column N should be able to state "True" when DE or YO is identified.

Thanks in advance.