phillum
n.— Note: From an exaggerated pronunciation of “film.” This term seems to be similar to the American fil-lim. «If you are looking for a “timepass phillum” this weekend, pass on this one. “Dil Pe Mat Le Yaar” is not only an intelligent film but a film that will make the willing viewer think.» —“Dil Pe Mat Le Yaar” by Anish Khanna Planet Bollywood (San Ramon, California) Mar. 6, 2002. (source: Double-Tongued Dictionary)
Further reading
The words cushy, cheeky, and non-starter all began as Britishisms, then hopped across the pond to the United States. A new book examines what happens when British words and phrases migrate into American English. Also, if you speak a language besides...
Ahmed, a native speaker of Arabic who also speaks French, wonders how he should pronounce words from those languages when speaking English. For example, should he model the pronunciation for the name of the writer Kahlil Ghibran the country of Qatar...
“Fillum”, however spelt, is a long-established colloquial/humorous pronunciation of “film” in British English. I remember my Grimsby gradparents using it (seriously), which would have been in the 1950s.
Also, “fillym” is the Manx word for film.