3.1.2 - Business growth

Organic Growth

There are two broad routes to growth. A firm can grow organically, which means expanding through its own activities, or it can grow externally through merger or takeover. A merger is an agreed combination under common ownership, while a takeover happens when one firm buys another, sometimes against the wishes of the target firm's managers.

Organic growth includes opening new branches, building extra capacity, hiring more labour, developing new products, or entering new markets. LEGO is a useful example: it expanded through new product lines and wider global sales rather than relying mainly on buying other businesses. In April 2025, for instance, it opened its sixth factory, in Vietnam, adding capacity it built itself rather than bought.

The main attraction is that organic growth is usually lower risk. The firm is building on activities it already understands, so it does not need to combine two workforces, two IT systems, or two business cultures. Owners also keep full control, and the firm avoids the legal fees, advisory costs, and takeover premiums that often come with acquisitions.

The trade-off is speed. Organic growth can be slow because capacity has to be built, staff trained, and customers won over. A rival may grow faster by buying an established firm with ready-made assets, technology, or access to a market. Organic growth can also limit the flow of new ideas if the business relies too heavily on its existing way of working, and some directors may see it as too gradual if they want rapid expansion.

Vertical Integration

Vertical integration happens when firms at different stages of the same production process combine. The easiest way to picture it is as movement up or down the supply chain, from raw materials through production and distribution to the final customer.

Backward vertical integration means moving towards suppliers. A car manufacturer buying a steel producer, or a bicycle manufacturer buying a tyre supplier, would be moving backwards towards the raw-material or component stage. Forward vertical integration means moving towards the customer, such as a manufacturer buying distributors, retailers, or outlets that sell directly to consumers. In 2017, for example, the brewer Heineken bought around 1,900 pubs from Punch Taverns, moving forward to the outlets that sell beer to drinkers.

Tesco's takeover of Booker, completed in 2018, is a helpful UK example. Tesco was already strong in retail, while Booker operated in wholesale supply. By moving backwards into an upstream stage of the chain, Tesco strengthened its access to supply and widened its reach into convenience and catering markets.

Vertical integration can raise profit by allowing the firm to capture margins at more than one stage of production. Backward integration can improve security of supply and reduce the danger of a powerful supplier raising prices or failing to deliver. Forward integration can improve quality control and give the firm a better route to market, and it may also make life harder for rivals if valuable retail space or distribution channels are tied up.

The disadvantages come from moving beyond the firm's core expertise. A business that is good at manufacturing is not automatically good at wholesaling, mining, or retailing. Vertical integration is also expensive and can reduce flexibility, because the firm may become committed to its own internal supplier or distributor even when a better outside option appears.

Horizontal Integration

Horizontal integration is when firms at the same stage of production in the same industry combine. In practice, that usually means one business merging with or taking over a direct rival.

This route can be attractive because it reduces competition immediately. If one supermarket buys another supermarket, or one pharmaceutical company buys another pharmaceutical company, the combined firm gains market share and may have more power over price, advertising, and bargaining with suppliers. It may also be able to rationalise duplicated factories, offices, or product lines, so economies of scale become more likely. Different sites or brands can then specialise more clearly in the activities they do best.

Horizontal integration also tends to be easier to manage than some other forms of external growth because the firm is expanding in an area it already understands. The products, customers, and market conditions are more familiar, so there is more chance of achieving genuine synergy rather than just owning a larger but more awkward business.

But the strategy also concentrates risk. If demand in that one market falls, the larger firm has even more of its resources tied to the same industry. There is also a serious competition issue: the more the merger reduces rivalry, the more likely it is to be investigated by the Competition and Markets Authority if it may substantially lessen competition. In April 2019 the CMA blocked the planned merger of Sainsbury's and Asda, concluding that shoppers would face higher prices and less quality, range and choice.