Good news: After lots of hours research, contact with different institutes across the country, quality checks etc. there's for the first time a high-quality DTM of the whole United Kingdom
https://data.opendataportal.at/dataset/dtm-united_kingdom
For about 75% of England, Wales, Northern Ireland fine LIDAR source data available, Scotland
unfortunately (beside river valleys and coasts) is not covered as well. For the areas not covered with fine LIDAR-data I used OS DTM-50m which is wider gridded but also based on LIDAR source data and hence especially in wooden areas more accurate than SRTM data.
Enjoy the new DTMs of the UK!
https://data.opendataportal.at/dataset/dtm-united_kingdom
For about 75% of England, Wales, Northern Ireland fine LIDAR source data available, Scotland
unfortunately (beside river valleys and coasts) is not covered as well. For the areas not covered with fine LIDAR-data I used OS DTM-50m which is wider gridded but also based on LIDAR source data and hence especially in wooden areas more accurate than SRTM data.
Enjoy the new DTMs of the UK!
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