Merry Christmas Len ....... what a strange thing to be doing whilst on holiday, aren't there any dentists in Colchester? There are a couple of ways to have teeth whitened ........ either by laser or bleaching wearing a gum/ teeth mould every day or night. Have you also considered any follow up appointments that might be needed as a result of the check up? It's a long way to go back and personally I wouldn't have either done in Philippines