
Tells you if a National Insurance Number (NINO) is valid
Inputs
The national insurance number is passed as a string. The length should be 8 (without a suffix) or 9 (with a suffix)
Assumes
This uses the current government standard for National Insurance Numbers
Returns
True if it is a valid NINO and false if it is invalid
Side Effects
The application will display a message box telling you if the NINO is valid or invalid