Help with hallmark on Teapot

Can you please help with this HF hallmark, I cant find it on the web

Strictly speaking this is not a hallmark as your teapot is not silver. The manufacturer’s mark, HF, is not known to me although there is an outside possibility that it could be the Sheffield company Harrison Fisher & Co, based only on the coincidence of the initials. EPNS shows that the material is electroplated nickel silver.