The RC Design Functions spreadsheet has had two further recent revisions:

9.08 21-Feb-25 CircUPF EC2 parameters corrected to allow variation of reduction factors for steel and rectangular stress block factors.
9.09 6-Mar-25 Calculation of depth NA amended in UMomPF for NA outside section

The revised file can be downloaded from:

RC Design Functions9.zip

See: RC Design Functions 9.07 for more details of recent revisions.