Hi Alan

Code works perfectly where there are several columns next to Col A where the text is in bold

I have another sheet where there is only one value next to the text which is in bold and I get type mismatch and the following code is highlighted

Code:
 If c.Font.bold = True And Len(c.Offset(0, 1)) > 0 Then
I have amended your code to produce a thick border box where there is is one value to the right of the bold text

Kindly test & amend

Code:
 Sub Thick_Border_Bank()
Sheets("Man Accounts Bank").Select
Dim lr As Long
lr = Range("A" & Rows.Count).End(xlUp).Row
Dim c As Range
Dim rng As Range
Set rng = Range("A1:A" & lr)

For Each c In rng
If c.Font.bold = True And Len(c.Offset(0, 1)) > 0 Then
     c.Offset(, 1).Select
    Selection.BorderAround Weight:=xlThick
End If
Next c
MsgBox "complete"
End Sub