Frog/toad? Parasites?

Frog/toad? Parasites?

Observation - Frog/toad? Parasites? - UK and Ireland. Description: very concerned as I noticed a large number of frogs/toads with unusual growths in my local lake. What are they? are they harmful? does it need reporting?

very concerned as I noticed a large number of frogs/toads with unusual growths in my local lake. What are they? are they harmful? does it need reporting?