How do you say feeling?
What accent says feel like fill?
sound shift
Paul, your Wikipedia link says that the feel–fill merger “is commonly found in Estuary English”. I believe you live in the Estuary English zone.
Is the G silent in strength?
So, the “g” is not actually pronounced as a “g,” but it is not a “silent” letter either. It is actually pronounced in words such as “anger” and “linger”—but the same sort of thing does not happen in “strength” and “length” because of the “th” sound that follows immediately after.
Is the H silent in human?
H is silent in many English words, for various reasons. Not all such words that have come into English from French still have a silent h, however. Over the centuries we have come to pronounce the h in words like horrible, hospital, host, human, and humour.