You are really behind, some 10 years to be more exact.
Ilford and Kentmere films are made in the same factory as they have been for a long time. It was just the name over the door that changed from Ilford Ltd to Harman Technology Ltd in 2004 as the result of the emergence from liquidation.
Harman is simply a group of 6 people who all worked on the Ilford factory. They bought the factory and rights to continue to make Ilford film, papers and chemicals.
Harman is the name of the founder of Ilford.
Harman/Ilford is the oldest company still making film.
I'm not admired you haven't heard of Adox, Foma and ORWO (ORiginal WOlffen). These are manufacturers more associated with the East side of the Berlin wall.
They are very old names now. Some like ADOX have been resurrected in the last 20 years.
Foma, Ilford, Fuji and Koda are the only factories remaining capable of producing film from scratch to the finished box. The others can only do one part of the process. Typically they can only do the slitting and finishing of films in their factories.
In fact, ADOX now has the smallest chemical factory in the world.
Films for Foma and ADOX are normally of the old cubic grain type and are excellent quality for the low price.
Please try them and the chemicals made by these factories.
I like Fomapan 400 and the NEW Retropan 320 Soft, as well as Fomadon R09 developer, a version of Rodinal.