Hi Bluepilot, I was just describing my 'best way out' for your current situation.
Most facts you mention are i.m.h.o. just results/consequenses of having different contracts. The Dutch union (VNV) has never before and never will, accept situations where KLM pilots were judged/reprimanded/fired by non KLM pilots. Consequence: it makes a pilot on UK contract working for KLC UK pretty useless in any KLM management position. They also make sure that only KLM pilots can fly for KLM out of AMS and that the UK contract will not be exploited for cheap labour, I am sure there are managers dreaming about f.i. KLM-India with cheap pilots flying out of AMS. The KLC UK contract was a potential leak on smuggling cheap labour into AMS. A contract on which the VNV obviously has no control. Concequence: the requirement for reducing the number of UK contracts. Pilots can and do live wherever they want all over the world, the VNV really doesn' t care but there will be only one contract out of AMS.
I am very happy that you' re negotiating via BALPA where there is a lot of expertise in making contracts. Bad contracts can be beneficial on the short term for a few, but a disaster for many on longer term. Hence the suggestion from my previous post, (re)open negotiations and join mainline contract. It would make life so much easier...