Most of the familiar high street name Champagnes are made by traditional Champagne houses who blend wines from grapes grown by a variety of farmers to produce a consistent house style. Grower Champagne is different in that it's made by the person who grew the grapes and therefore has a more unique character with the process controlled end to end.
Tribaut Champagnes are now made by Valerie, the daughter of the original founder Ghislain, who has now retired.