Find many great new & used options and get the best deals for Roof Rack 2 Bars for Land Rover Defender - Landrover - TITAN WorkReady at the best online prices at eBay! Free delivery for many products.
Have a look on the Flatdog UK website at FD Rax as well- I'm contemplating this for mine, and they seem to have a nice idea on modular systems to grow with your needs/budget.
second hand! There is an almost endless supply of roofracks and bars for defenders on ebay/facebook/4x4 auto jumble. ranging from the simple box section brownchurch style up to the modern aluminium flatrack. In terms of my experience I have a set of roof bars that were second hand that made way for a full length brownchurch roofrack. Unless you want a roof tent (then you need a flat rack) imo the brownchurch cage style rack is the best option as an all rounder.
It is also likely to cost you half as much as a new one as they are horribly over price, even when you factor in a light sanding and some paint a used one will be much cheaper.