Elliot Newton, director of rewilding at conservation group Citizen Zoo, said the new kits showed beavers could “coexist with people in the heart of urban London”.
The project’s lead, Dr Sean McCormack, said: “Personally, I’m very excited to see what names the children come up with.”
The scheme is run by Citizen Zoo, Ealing Wildlife Group, Friends of Horsenden Hill and Ealing Council, with funding from the mayor’s office.
Its backers say the beavers have created new wetland habitats on the site, improved water quality and made the area more resilient to flooding and drought.
Paradise Fields is free to visit and open 24 hours a day.
Entries can be submitted through Citizen Zoo’s website.
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