This height safety kit from Ferno has some of the basic fall arrest gear for working onsite.
It comes with a basic fall arrest harness the Ferno FH50, a 2.4m retractable lanyard or mini inertia block, a 1.5m Round Sling and a roll top bag for storage. The bag in the picture is slightly different to the one supplied. I will update this when possible.
This is a great place to get started buying height safety equipment, and the kit bag is big enough for you to keep adding extras as you need them.