May i just pick up on something asked earlier? Was Lydd listed as an altrnative on the FP? If so then no wx diversion is applicable because you have PLANNED to go there. If not why not use the alternative in the FP?
As a matter of interest, some while ago I had one very rough running engine whilst at FL55 passing overhead an RAF station. A quick brief to the contrioller and and I was cleared straight down in a spiral to land (all other traffic temporarily dispersed). Problem was solved, I departed and received a bill for landing. No problems, just pleased they were there and so obliging at a very very busy station. Pay with good grace