Hi Keith .... some people might also call this a wine ewer - and on balance taking into account a whole raft of issues, my opinion is yes it's an English made piece. IMHO, what this one appears to be doing is copying the Irish style from c. 1800 - 1820 - the age of exuberance as the books say - whether this particular piece could be described as 'Anglo-Irish' would depend more on when it was made - so really not sure on that point. Many manufacturers of cut glass in particular removed themselves from England to Ireland in the late C18 - early C19 to avoid the British government's increasing tax on glass houses. This piece shows classical lines - suppose the ewer design has been around for a long time, and jugs and ewers were a commonly mde shape.
The high swan's neck handle, attached top down (the staple repair indicates one of the probable reasons this method of attachment was reversed toward the last third of the C19). The saw tooth rim on a beaked lip - deep prismatic/step cutting above a large field of relief diamonds - short round stem below a collar, and a circular foot with profuse radial cutting. Wilkinson suggests the 24 point star as c. 1830 - 1840 - and the 32 point star as c. 1840 - 1850. The earlier stars - i.e. 16 points for c. 1820 - 1830 don't appear to match with the greater number of points on this piece, so it all becomes rather confusing.
Provenance/attribution is impossible for these things, and even experts argue as to the origin of many of such pieces ............. colour of glass, depth of mitres ..... it's really only the known pieces with pedigree that are dead certs.
Having said all the above, there is the very real possibility that this piece is a late C19 or first half C20 copy - wear on glass of that age is still going to be considerable and can mislead - relief diamonds and rims in particular suffer the most. Many of the famous glass houses we speak of here knocked out prodigious quantities of copies of C18 and early C19 designs and styles in the 1930s - copies that now would fool most of us as to age - they copied Irish and English patterns and styles from 1750 onwards - how was this one described when you bought it?