Thanks guys, and sorry for the late reply as I have been travelling with work; less time for projects!
@ballscrewbob - that utility is absolutely great, I've been using it, thanks for sharing.
@sandeepmistry - good point about the MKR1400 not shipping with an onboard I2C GPS connected to the U201. I'm a little unclear about the process for connecting one to it, though, or whether that's actually possible, with the MKR1400. Any pointers you have here would be appreciated as it is such a neat little board, it would be great to be able to connect a GPS with minimum effort.
Thanks!