That's an interesting torpedo soda bottle because it appears to be an advertising example piece for the bottle and glassmakers themselves. I found one other example archived from a dead geocities page (scroll down to the bottom): http://www.oocities.org/torpedobottlecom/page7.html
No idea as far as value goes, perhaps a collector of UK sodas would have some input there, but it seems to be a pretty rare one.
Thanks, I found one that sold at auction in Australia earlier this year for $265A (about $175 US). Seems to be rare, but not super valuable. Thanks for the help KK