Replying to Ski shops in London who can mount a binding from a paper template...competently

Going on a trip at short notice where some super fat twins are going to make a big difference. Got some Armada Bubba's inbound and a pair of Pivot 18s to stick on them when they arrive but am not aware of ski shops in London (England) that would know how to do a paper mount...any suggestions?

Or am I just really old and do most ski stores now have binding mount guides that can deal with a ski with a 132mm waist?