In UK bars market, I think it had the relative merits of quantitative and qualitative approaches to bars market segmentation. As UK bars market segmentation, the UK bar owners need to identify groups of bar customers who have similar needs and respond in a similar way to a given marketing stimulus to raise their bar competition. Hence, UK bar owner may use segmentation to measure whether whose bar ought to choose to locate where location ( areas) to provide which kinds taste of wines, coffees, foods and entertainment to attract which kind of bar client group mainly, e.g. if the bar target client group is professional office female, it can locate at upmarket location in low density housing areas. It is likely to offer high quality food because there are many professional office female clients are in these low density housing living. However, bars market segmentation should be regarded as the bar wines and coffees drinking and entertainment service provision of critical thinking rather than as some pre-determined set of procedures. It shall follow that to let the bar owner to know what is an appropriate basis for the bar segment and one client group market may not be appropriate to all bar client groups in the UK bars market. To aware of the criteria by which the effectiveness of any UK bars segmentation basis can be assessed. I shall indicate those four important criteria to measure the relative merits of quantitative and qualitative approaches to UK bar market segmentation which can earn. The four important criteria include the usefulness to the UK bars marketing planning; the size of the resulting to the UK bar segment; the UK bar measurability and the UK bar accessibility four criteria. On the usefulness to the UK bar's marketing planning criteria hand, it needs to ask this question before which chooses who is whose bar target client group and location and wine and food taste. Is the basis of bar market segmentation useful to the bar owner? It is easy to develop bases for market segmentation when losing sight of the purpose of the exercise. Essentially, the exercise is worthwhile only bar segmentation allows the UK bar owner profitably to penetrate a greater proportion of UK bars market then would have been the UK bar market case if the exercise had not been undertaken. UK bar market client groups identified as homogeneous bar market segments must be just that: Similar in terms of the needs of tastes of wines or coffees drinking and entertainment consumption behavior of the domestic or foreign individual client who contain. The UK bar shall fail in whose segmentation exercise because its assumptions about homogeneity within a bar segment, e.g. male or female or young student or young non student or family with children or family without children or bicycle sport client or office of non office segment, who overlooks some critical differences within the bar segment which leads to varied responses to the bar service offering that has been specifically targeted at the bar client segment. For example, a bar segment for the office workers target client group, instead of the bar owner needs to consider the location whether it is located to close to whose office, who also needs to consider these factors such as, what kinds of foods, wines, coffees drink taste and what kind of entertainment and service price charge and their habit consumption time. To be more effective, bar market segmentation must recognize the diversity of needs within this bar target client group. Hence, the bar can measure to quantify and quality its bar target client group to produce its bar market planning effectively.