Britain´s contribution to telecommunication

Since the 17th Century, Britain has been in the forefront of telecommunication development, to the extent that today, in the fieId of submarine commuimication systems for example, there are over 33,000 nautical miles of British submarine telephone cables completed or under construction. Most of the cables are part of the intra-Commonwealth communication system, and include over 1,500 repeaters - about half of the world total.