National One Call provides the UK's biggest Dial Before You Dig service, contacting and obtaining plans from authorities / gas / electricity / pipelines / telecoms / water & sewerage for any UK site. Dial Before You Dig enquiries are free if you wish to do the legwork of contacting / chasing / collating etc, or our Retriever service will do it all for you. Site-owners can protect their sites / networks / estates etc by placing them on the Dial Before You Dig service. A Sponsor network a) sponsors the public Dial Before You Dig service and b) allows enquirers to request quotations, e.g. site surveys / soil sampling etc.