(108)Investment firms executing orders should be able to include a single execution venue in their policy only where they are able to show that this allows them to obtain best execution for their clients on a consistent basis. Investment firms should select a single execution venue only where they can reasonably expect that the selected execution venue will enable them to obtain results for clients that are at least as good as the results that they reasonably could expect from using alternative execution venues. This reasonable expectation must be supported by relevant data published in accordance with Article 27 of Directive 2014/65/EU or by other internal analyses conducts by the firms.