Feed costs remain (and are expected to remain) the major cost in pig production. In Great Britain, the cost of producing 1kg of meat is higher than other major pork producing countries, and they also have lower production levels. In the UK, reducing feed costs is complicated by variables that are hard to control due to the production system used. This includes lack of environmental control due to semi-intensive housing, use of straw, the use of old housing or large group housing, and disease. Feed costs can be reduced by reducing wastage, competition for nutrients, or increasing feed utilization. Competition for nutrients can be from disease presence, fungi such as fusarium, and yeast or bacteria in feed. Improper nutrient utilization can occur due to feed formulation imbalances, inaccurate nutritional values, and particle size. Some of the basic requirements of increasing daily feed intake are to have feed in the feeder when the pig wants it, have the feed accessible, have adequate feeder space, placing the feeder to avoid fouling, uniformly blending feed, and controlling formulation changes to avoid anti-nutritional factors. Other considerations include having strategies to counter the effects of hot weather, being aware of breed-specific feed intake curves, running feed intake trials regularly, and monitoring of ingredient changes in different loads for liquid feeding. The use of co-products in feed can help reduce costs, although there are problems to consider before incorporating them into a diet. The nutrient profile is not always consistent and can deteriorate in storage, storage tank uniformity needs to be monitored and controlled, the nutrient profile should be analyzed regularly, co-products may be less palatable, co-products can carry contaminants, and handling may be challenging.