Hi and thanks for posting.
I do not have vast knowledge of dating UK bottles but I am comfortable saying this is 19th century - later 19th c.
A few things to observe - in photo #1, the lip is applied to the neck of the bottle. If you look closely you can spot some visual clues to suggest that this is the case. With later bottles, the lip is formed at the same time without adding further glass.
The forth photo does a great job of illustrating the irregularities of the glass surface and imperfections in the glass. Machine made bottles are much more uniform and smooth and the glass will have if any impurities.
This is a common generic bottle but old enough - I would be back at that location looking for more!