The data recliner previewer helps you quickly see the data before you go to the download it. Data.gov.uk now has a table preview function, so you can see how the columns would appear in a spreadsheet. And we're hoping to add more features, such as to filter and sort columns, as well as add basic graphing too.
These preview features are achieved using open source software Recline Data Explorer, which has been written mainly by the Open Knowledge Foundation and Max Ogden. Try it out with a dataset like this one: http://thedatahub.org/dataset/uk-house-price-data/resource/79d4aca8-3bbf... and let OKF and us know if this would be useful in data.gov.uk.
Open Knowledge Foundation