thanks Bernard - I will indeed look very soon, but I had just typed a reply, which had crossed with yours, so I will let that stand for the moment, and then go back into the search after lunch. Apologies if some of my comments may possibly seem redundant.
""many thanks to Anne and m for taking the time to reply

Don't think I had seen if any one had commented as to whether the......... 'polished pontil makes it pre 1940 ish' and the 'snapped pontil makes it post war'..........is a hard and fast rule for Nazeing - quite likely it is not - but thanks to the pictures in the links, it does seem there is good chance of this one being from Nazeing. For whatever reason, don't think Nigel commented on David's blue barrel shapped vase - although the impression I got was that it may well be Nazeing. However, these swirly bubbled colourways are not easy to id for those of us who see them but rarely, and I guess you would need to handle a lot of pieces in the flesh to feel reasonably confident of attribution (I had in fact typed this before seeing the self-same comment in Miller's Glass of the 20's & 30's) - you only have to look in Hajdamach (C20 British Glass) and see the variation in swirls, colours and bubbles, to see the difficulties (chapter 8 is well worth reading re these cloudy/bubbled pieces). Confusingly perhaps, for us ordinary hack collectors, the Miller's 20's & 30's Glass offering says, when speaking of Nazeing "..........the characteristic 'cloudy' pattern dotted with tiny bubbles that is a reliable identifying feature of glass by this firm" - which does seem an over-simplification and may well lead you into trouble - and I'm thinking here of S. & W. pieces in particular, which can be very similar, and contribute to difficulties in getting it right (Nigel helped on a green bowl last year).
Although Keith didn't include dimensions of his yellow posy vase (for which Nigel confirmed the id), there is, coincidentally, a very similar coloured posy vase on page 108 of Hajdamach - so maybe this might be the same as Keith's example.
The slightly yellowish tinge on the base of mine is staining from standing in rusty water for some time I guess (it came from yesterday morning's boot sale), and I must clean it - otherwise the clear parts of my vase really are clear. There are many different shapes from this period, so don't think that aspect can be used as a guide, although judging by the illustrations in Hajdamach, BGBTW, Miller's, Leslie Jackson, this 'barrel' shape with the heavy clear stubb foot, doesn't seem overly common.
My apologies to Emmi that this is a tad long winded.

"" - and hope that she is feeling a little better at the moment :fwr: