I live in the UK as well. Your first stop is your supplier (Sale of Goods act protection etc.).
It's not nice to have anything break, but you are out of touch with reality. One wire connection broke and want to chuck the kit away, because you can't solder small wires, and don't give a toss about warranty or consumer rights. If I was that bothered about the wires I would do what Tigger29 suggests.
Its not that I cannot solder wires, the problem is the wires are all over the place I mean look at the photo is it really any wonder one of them caught and broke?? So what your now asking me to do is get the wires bound together, then figure out a way to suspend them so they cannot interfer with the travel of the pedals? But at the same time ensuring that the wire is placed in such a way that it will not suffer a dry connection or complete breakage at the point it enters each pedal from constant bending?
I can tell you now after looking at this that it is impossible to do without leaving screws that hold the casing together out and sawing the mouldings for the screws away from the casing, like AKAK said this has been designed wrong for 15 years. These pedals roll in a straight line, a simpler design would be to base them on real rudder pedals and run the wire through the link, removing any chance of wires catching on moving parts but I suspect they are designed like this for a dual purpose ie driving sims.
You think anyone in their right mind would pay top dollar for these and then do a complete redesign job because the design is basically flawed? Whos out of touch with reality now? If this thread or the picture gives some unknown searcher or player the opportunity to see what they are paying for before they buy then this thread has done its job.