Britannia Aggregates and Volker Dredging are two Brett joint venture companies concerned solely with the extraction of aggregates from the sea bed.
Both companies are continually prospecting for new reserves - it can take anything from five to eight years to obtain a new dredging licence. Echoing the environmental concerns which permeate the Brett Group, Britannia and Volker both rigorously observe all marine controls that monitor and regulate the effects dredging has on shorelines, fishing and marine life.