Nazeing Glass did make some lamp bases circa 1935-1942 and we have some examples in our Museum. We alos made some attractive latticino in green , blue and in white, I would need to see a photo to say whether they might be Nazeing though.
The really heavy ones are pear shaped bubble and white and coloured glass and we have three of those in blue, green, and red streaks.Co-incidentally i spent the weekend re-wiring them so they meet the modern PAT test (Portable Appliance Test) so that we can use them!.