lakedistrict
Tricky one. Crag Brow is really just a section of Lake Road (it has other names further downhill). Looking at shop addresses, the split is at the Beatrix Potter entrance/Helm Road junction, OS think it's around Bank Terrace. There aren't any signs at the top end of Crag Brow but from a local's perspective I'd say how it is currently mapped (split at top end of the Co-op) is more or less correct. 

You can still use addr:street=Lake Road on the shops though. :D