Tricky, Ivo. Hajdamach struggled to find a handful of attributable English examples, and it doesn't help when some were decorated outwith the glassworks, and the Bohemian? decorators moved around, not just within Birmingham/Stourbridge/Manchester/London, but from country to country.
You might try photographs to Simon Cottle and Roger Dodsworth, but don't be optimistic that you will get anything other than a stock response â€” probably along the lines of "possibly Richardson", or "Bohemian", whatever that means.
Date â€” Hajdamach dates them from about 1840. His end dates of around 1860â€“70 are fine for specific examples, but much too early for the general style.
Yours looks an nice example with unworn decoration. You don't see many like it.