[theazureguy]

Yeah aware of some data quality issues in the feed, bad coordinates, missing brands, occasional obviously wrong prices. I filter out anything outside 100-300p and exclude stations flagged as closed but there's definitely still noise in there. check the methodology page for the full detail on how i clean it.

On the colours, esso and shell are both red brands so they ended up close on the chart. will fix that.

[hermitcrab]

The Shell logo is mostly yellow, isn't it?

[theazureguy]

shell's logo does have a lot of yellow but morrisons has already claimed yellow on the chart.