UK Postcode / Postal Code Format Validation Class *UPDATED*

If you are using a text box to input a UK postcode, the text box can be attached to this class, which will then ensure the text entered is UCase & conforms to a valid UK Postal Code format. I have add a new function to the class which enables Multimap Lookup. (Thanks to Jon Webb for that code.) Cheers also to Simon Woollard for pointing out the changes that were needed.