We at The Hug developed that route planner for them. Since then we’ve done a pretty much complete rewrite of the software.

We have also developed our own set of map tiles which we use on various sites again using OSM for a lot of the base data along with OS OpenData for contours, building shapes, and some place names, and other open data sources. We’ve also extended it to cover Eire too.

You can see this all in action on our demonstrator site at https://waymaps.the-hug.net