I am getting #N/A as a result of these VLOOKUP's
=VLOOKUP(A5,'Line Audit FOLLOW UP'!$C$256:$AP$1500,24,FALSE)
=VLOOKUP(A5,'Line Audit FOLLOW UP'!$C$256:$AP$1500,25,FALSE)
=VLOOKUP(A5,'Line Audit FOLLOW UP'!$C$256:$AP$1500,26,FALSE) ...etc

where A5 is a serial number reading from another worksheet (the result of)
=IF('Line Audit'!C256<"",'Line Audit'!C256,"")

I can't remember having this trouble before with a result of a formula being
called upon for a result in VLOOKUP
If so, is there a way around it?

Hi,
When VLOOKUP returns #N/A, (and 4th argument=False) it means that it hasn't
found the lookup value in the table. Are you sure that the value in A5
actually occurs in Column C? It has to be an exact match.
Regards - Dave.