As far as I am aware made at Robertsbridge: Prototypes and Pros Bats.
All other bats GN factory in India.
The custom mades we have arranged in the past are made at Robertsbridge. @madebygraynics regularly tweet the progress of the bats we get them to make, something
@iand123 can confirm as they involved him completely in production of his Nemesis.
Whenever they have a shortage of a certain model they may produce a small batch to meet demand in the UK rather than wait for a drop from India. I had some Lucky 7's available before official release date, as well as some Nemesis and Vortex bats that (whilst not being able to say for certain as it isn't my place to) I am confident were UK made. The differences are subtle but easy to spot when you know what you're looking for.
Not sure why this topic about the Legends price tag has been made now. This is the price they have been for a year now. This is also an RRP, we sold 2 Legends this season at our price of £550. Considering Kookaburra offer a bat at a similar price, that isn't as classy looking or lazer engraved, I know which i would prefer if i was to spend that amount on a bat.