For Vampire, I have a suspicion that Taziker will get the nod for a Vampire retrack. Given all the work they have done for PMBO, a fellow Arrow coaster no less, and how they have actually been getting more and more orders for ride retracks overseas, their efforts would not have gone unnoticed by Merlin and they might be a strong competitor to get a contract for a Vampire retrack.
I know some will say Vekoma but then again, this is Merlin who will always look for the cheapest option and when you take in consideration that they would not have to worry about paying for oversea costs and transports, would be a whole cheaper to employ a UK based company to do it though I could see Vekoma still being involved with getting in new trains themselves unless, heaven above, Taziker decided to take it on themselves. I know some will say that is unlikely but if you saw that IAAPA video that in the long term they want to enter the coaster building industry which frankly given what they's done to PMBO they might already be in it, could a Vampire retrack be the big breakthrough they need? Would be interested if we had a coaster manufacture in the UK, who knows what might be possible to build if they don't have to worry about overseas transport costs, especially for the smaller UK parks who likely couldn't afford anything big in the first place?