Several of these Late Antique St Menas flasks are found in Britain, including from Meols (Wirral), Canterbury, York and Letchworth: https://www.reading.ac.uk/web/files/GCMS/RMS-2006-04_S._Bangert,_Menas_ampullae,_a_case_study_of_long-distance_contacts.pdf … & https://www.academia.edu/2936691/Menas_flasks_in_the_West_pilgrimage_and_trade_at_the_end_of_antiquity … & http://intarch.ac.uk/journal/issue41/4/7.html#7.1 …https://twitter.com/KPW1453/status/973288946514972672 …