Hydaulic Lias Lime home of the UK's leading independent lime supplier and the only British manufacturer of hydraulic lime Singleton Birch produce hydraulic lime and high calcium lime at our works in North Lincolnshire. This website is intended to provide a resource to users, specifiers and those with an interest in building limes for both restoration and new-build.We hope that you will find what you are looking for on the website, but if you have any questions or suggestions for improvement then please give us a call or drop us an email