Please I need to concatenate a series of cell. The pattern is shown
below. The first names are in col F and surnames in col A. I need both
names in Col F. Please I will appreciate suggested solutions in the
accompanying cell reference style.

Range("F" & z).Value = "John"

and

Range("A" & z).Value = "Smith"

Result:

Range("F" & z).Value = "John Smith"

Try it this way...

Range("F" & z).Value = Range("F" & z).Value & " " & Range("A" & z).Value

Rick Rothstein (MVP - Excel)