if you're basing your thoughts Chris on features such as iridescence, wavy rims and naturalistic feet etc., then you'd have half of all the Continental made glass from the 1880s - 90s as potential contenders.

You don't comment as to whether you have Reynolds book or not, so unsure if you've looked in said volume.............. he reproduces some of Walsh's original factory drawings, for these naturalistic designs, submitted to the Board of Trade, on which are also included the corresponding Registration Nos. - Reynolds doesn't appear to include your particular pieces. Regret I no longer have Gulliver, so can't check his book.
From looking at the designs shown in Reynolds, my impression is that those of a naturalistic/nouveau bent, Registered by Walsh during the last two decades of the C19 are, within reasonable limits, designs of a repeatable nature - although doubtless they wouldn't be repeatable exactly.
Walsh did make lampshades, epergnes, vases and flower holders etc., that had wavy rims, iridescence and hot-worked leaves with naturalistic looks, but my personal opinion is that your pieces are just a little too naturalistic and unrepeatable to be Walsh.
One of Walsh's most successful Registrations at that time was the 'Palm Tree Vase for Holding Flowers' (Rd. No. 100004) - this appears to be a red body with clear leaves etc. - and to quote Reynolds.................."Such was the success of this (Rd. 100004) that imitations soon appeared and, again, a warning was issued that legal action would be taken against those who were marketing imitations which infringed the Registered design 100004."
Obviously there was much copying of this naturalistic style, and your pieces might be by one of the many manufacturers who produced fancy glassware along these lines, both from within the U.K. or the Continent.
Only my opinion of course.
P.S. very good pix by the way.