Other Technology, Media and Telecommunications Technology, Media and telecoms By The Lawyer 29 January 2001 00:00 13 December 2015 22:12 Crown Castle signs deals with BT and Dolphin Telecommunications to expand mobile telephone networks. Crown Castle advised by Denton Wilde Sapte (John Worthy). BT advised by Ashurst Morris Crisp. Dolphin Telecom advised by Taylor Joynson Garrett. Name Email Cancel reply Threaded commenting powered by interconnect/it code.