All booked, holiday here we come! You go to www.ukholidaysinthesun.co.uk then it's fairly straight forward. You add your booking code, 10 code words (listed above), details of those going and enter 4 dates from a list and 4 holidays. They show you which fit your needs and you select one and pay.
Sorry just checked, book online here only with a priority ref number https://www.ukholidaysinthesun.co.uk/ or you have to send the codes off. I have them and can post if anyone wants them but it's quicker if someone isn't using their booking reference number.