Splosh,
I'm not clear as to what you are asking, but have you explored the posibility of changing to a JAR CPL + IR. This then gives you a rolling 7 years (from last IR renewal) to upgrade to an ATPL, I guess due to the 500 hour multi crew requirement.
Looks like my way out of the current mess, and I'm in a similar position to you. My fear is that the Gatwick mob are prone to changing things almost at will without warning or notification, and as far as I'm concerned, nothing is guranteed.
PS (fingers crossed)