Thanks for your response for help.
Greg, your suggestion lead me to an old thread where Nigel Benson had used some Nazeing lattice glass for an exhibition.
The type of lattice work in those examples looked a bit wider than my vase.
The type of lattice in the flying free picture looks the same as mine.
Maybe this and Christine's label points towards a Czech origin?.
I tried to take a base photo the same as Christine's and noticed a tiny bit of iridescence. Maybe an old label mark,maybe wishful thinking.
I do have a few items of Nazeing glass and when i dig them out i will see if they react to UV light.
Thanks again,
Tim