Pat Morrissey is currently a communications officer working for Dan Miller, the Leader of the Opposition. She previously worked in communications under Prime Minister Tom Davis and his predecessor. She is a member of the Labour Party.
Despite never being seen onscreen, she is implied to be heavily overweight, perhaps even obese by everyone who talks about her.
Her rank within the Communications Office at Downing Street and later Opposition Headquarters in the Norman Shaw Buildings is never specified. However she is almost as high ranking as Malcolm Tucker, with the two occasionally competing for power.