Hi again,
I've just change a bit of the code so it looks like this now:
strSQL = "INSERT INTO participant (ni_number, first_name, last_name, date_of_birth, [image]) VALUES ('" & nin & "','" & firstname & "','" & lastname & "','" & dob & "','" & photo & "');"
Conn.Execute(strSQL)
and it is now...