I found some entries in the 1831 census records where the name was FUGGLES but later in the 1841 records and onwards somes of the Fuggles becames Fuggle, some kept the s anyway.
A dear friend, a proffesional genealoist told me that it is likely when the clergy carried out the early census they asked "Who lives here" "The Fuggles" was the reply.So this was what the clergy wrote down. Very few people could read or write in early 1800s
However tracing back the name it apparently originates from the dutch name VOGEL meaning "bird". Indeed there was not a F in the language anyway. I have come across ffugle( an elongated s)in circa 1400.
I would like to exchange information and will get back to you soon