Radio Rentals was formed in 1932 to rent out radio sets by Percy Perring-Thoms with a turnover in the first year of £780. It later moved into televisions and ultimately video recorders. In 1965 it merged with RentaSet, Joseph Robinson’s similarly formed company. Then in 1968 it was acquired by Thorn Electrical Industries and joined with Thorn’s DER chain (founded 1938) as part of Thorn Television Rentals (TTR) though the two companies were run completely separately with different staff and vehicles etc. In 1980 TTR and thus Radio Rentals became part of the mergedThorn-EMI, and in 2000 it merged with Granada Limited to form boxclever. The company still trades as Radio Rentals in Australia.
Info gleaned from Wikipedia