Bernard Qualtrough is a fictional British spy appearing in series 7 of the BBC television drama Spooks (known as MI-5 in the United States). The character was played by Richard Johnson. In series 7, Bernard is in his retirement and is approached by his protégé Harry Pearce about operation Sugar Horse. This operation recruited sleeper agents in the (then) Soviet Union so they would rise to positions of influence before being activated. Harry is concerned that the operation, which he describes as the most important that MI5 has undertaken, has been compromised.