Kevin, you are probably looking for somewhere closer to you. I don't know of anywhere up your way, but I suspect there probably is someone there. Most good sheetmetal working places can laser cut these days.
In Chch there are quite a few, Carlton Taylor springs to mind, they are part of the Hamer Group. I am currently getting a large amount of work done thru one of their other businesses, an aluminium diecasting company.
Carlton Taylor do a lot of very accurate work for electronic assemblys, I had a look around their site a month ago.
Contact would be Jason Mangan who is their Production Engineer,
jmangan@carltontaylor.co.nz or ph 03 366 9064
cheers John