I'm afraid I can't provide any lyrics but a quick search revealed the following web sites:
The George Formby Society and
George Formby / The Ultimate Collection

which might help you out (particularly the first one).

AndyG

Oh, yes, it's "Sold at every chemist for one-and-a-tick."
which is to say one and sixpence, one shilling and six pence, eighteen pence, 7.5 pee.