As Structured Cabling specialists, Adaptive IT Solutions can offer a full range of Cabling services from Excel, including Category 5e, Category 6, Category 6A and Fibre Optics.
See the link below for a full overview.
http://www.adaptiveit.co.uk/uploads/document/p1a4sfu4ql1j4o1fau148r1rti66l5.pdf