UK Petroleum Market

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The UK petroleum industry consists of 3 main retailing ownership models. The 3 models are oil company, independent dealers and supermarkets. The concentration ratio in the petrol retail market has gone through a couple of changes over the past 10 years. Since 2004, the market share of supermarkets has increased by 10%, from 29% to 39%. In the same period, the market shares of oil companies and independent dealers dropped by 8%, from 37% to 29% and 1.6%, from 34% to 32.4% respectively. (UK petrol and diesel sector, 2013: 44-45). Please refer to Appendix A for the graphs. If we look at the market by types of ownership, it seems like oligopoly as 3 types of ownership dominate the industry. However, if we break it down into individual companies, the statistics reflects the opposite. Using the Herfindahl – Hirschman Index where the market share of each firm is squared and added up, we can find the market concentration of the UK petrol retail. (Modern Analyst, 2013)
Please refer to Appendix B for the table and values.
HHI = 16 ² + 15² + 14.1² + 10.4² + 9.7² + 9.4² + 6.1² + 5.4² + 4² + 2.4² + 2.4² + 1.2² + 1.2² + 1.1² + 0.7² + 0.5² + 0.2² + 0.1² + 0.1² + 0.1²
= 1069.21

As the HHI value is between 1000 and 1800. The UK petrol retail market is considered moderately concentrated which indicates that it is more towards monopolistic competition than oligopoly.

Although independent dealers make up 32.4% of the petrol market share, they own 59.9% of the forecourts in the UK. Oil companies and supermarkets own 25.5% and 14.6% of the forecourts in the UK respectively. (UK petrol and diesel sector, 2013: 45). Please refer to Appendix C for the graphs. Even though supermarkets own the least amount of the forecourts, they have the highest marke...

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...han ever. This shows that the petrol retail market sees a reduction in non-competitive behaviour, as the bigger retailers are not cutting the petrol price by a huge amount. There is substantial evidence to prove that the companies’ behaviour fit in with the non-collusive oligopoly: kinked demand curve theory, where prices remain stable with little apparent price competition.

While the market shares of the ownership types suggest that the UK petrol market is more towards monopolistic competition than oligopoly, the manner in which the companies behave indicates otherwise. Although both monopolistic competitive companies and oligopolies engage in non-price completion, the companies are interdependent and there are considerable barriers to entry. In this case, the UK petrol retail market reflects competitive oligopoly as the retailers are competing against each other.

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