I get a feeling Anne that these aren't Nazeing. The factory did produce a few jugs, of various sizes, that had applied clear handles, but not I don't think on shapes such as this, at least not according to Timberlake's book.
I've also never known their glass to have any sign of a sunset/fire glow - opalescent appearance - so on balance of probabilities I'd suggest these are more recent and not Nazeing. This shade of blue, plus this kind of glass/bubble mix also looks wrong for Nazeing.