Sorry, another warning. I've read somewhere else that they've been messing about with the sizes recently, with some confusion over "standard" and "precision" fit. If you can't try them on there could be a bit of guesswork going on.
I have always found inov-8 true to size until they started doing this! Now the x-talons are 1/2 size different depending on whether I go precision or standard...
Inov 8 are a UK company but shoes are made in China. Only Walsh still make them here (in Bolton). That said they don't do much in the way of light trail shoe these days and the fit can be a bit tight for some.
Personally I'd go for an inov 8 roclite or trailroc
Any parkrunners can get their bar code on a credit card, key fob or wristband with ICE details printed. I have one for park run and a couple of key fobs attached to bum bags so I've always got something with me.