I recently bought a book 'The History of The Beano' and the very first Beano, shown on the books' cover, has the Torelli Brothers' 'Tin Can Tommy: The Clockwork Boy' on the back cover. There are are a few more cartoons from the Torelli Brothers inside, including this 'Brave Captain Kipper' (the scan is awful, sorry) but there's not much information on them, either in the book or, curiously, on the internet. As the book says, their work looks very different from the rest of The Beano.
The Torelli Brothers art agency's relationship with The Beano was interrupted by the war and I don't think anything was heard from them after that. But any further information on them would be gratefully received.