In a statement Adnan and Arsalaan Habib's family described the brothers as their "family's precious jewels, spreading joy wherever they went".
The statement added: "They were happy and joyous boys who were a central part of the family, always smiling and bringing smiles to everyone they met."
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Another frosty night for some with freezing fog patches likely. Poor visibility on the regions roads into Tuesday
Frost and fog again overnight, slowly lifting during Tuesday as both winds freshen and temperatures rise a little.
Police investigating Paul Groom murder want to trace these passengers on a bus that Paul travelled on a few days prior to his death.