Key 103 is an Independent Local Radio station broadcasting to the city of Manchester and the north west of England. Its output is principally contemporary pop and dance music. It is owned by Bauer Radio and is part of the company's Big City Network of stations. The station is based in Castlefield. Originally named Piccadilly Radio, from its set up in 1974, the station was renamed in August 1988 when it was decided to re-brand Piccadilly Radio's FM frequency to the new name, with a younger target audience in mind. The original Piccadilly Radio continued to broadcast on the AM frequency of 1152kHz.
The station broadcasts on the analogue frequency 103FM, from a 4 kW transmitter on Saddleworth Moor and broadcasts on DAB Digital Radio from City Tower (formerly Sunley Tower) on the CE Manchester multiplex. Key 103's live broadcast can also be listened to from their website.
The station won three awards at the 2008 Sony radio awards. These consisted of Bronze in the entertainment category for the breakfast show 'Toolan in the Morning', Gold in the competition award for 'Sell Me The Answer' and Gold in the Station of the Year category.
As of 2008/9, Key 103 and its sister station Piccadilly Magic 1152 are the official commercial radio partners of Manchester United and Manchester City, broadcasting all both club's games live.