I don't own any Brora cardigans, but I have 5 sweaters in 3 different styles, 3 scarves and 2 pairs of socks, all started pilling within first 3 wears. Those tighter knit pill less, and it's not as dramatic as my cheaper cashmere from Pure. Nonetheless, my heart still beats for this company. The length of their fibers seem very good for a mid-market brand, and their loosest gauge is tighter than the normal standard of my cheaper cashmere.
I have always been told (some) pilling is impossible to avoid when it comes to hair, but I'm not too sure. In addition to my Filippa K I have a Burberry 70% cashmere 30% merino shawl/poncho that I've never had to remove pilling from either.
Filippa K had a store in San Francisco when she launched into US and Canada market, but that store no longer exist. US might not have worked out for her back then. Only thing I know is she's available through yoox.com, but no cashmere there for the moment.