Climbing Kit (Teddington TW11)

I tried to get into rock climbing a about 12 years ago and bought some kit (seen in the pictures) but I quickly realised it's not for me. The kit has barely been used (fewer than 10 times if I remember rightly and only by me, mainly at a climbing wall and once on a trip outside) . It was never involved in any type of accident. I'd be very happy to use it (if I weren't terrified of heights and adrenalin, haha), but of course I cannot provide the same safety guarantee that I could had it never come out the box, because it was used a few times. So you would need to make your own assessment of the kit (or ask someone experienced to do that) and decide for yourself if you are happy to use it. I'm a woman, size 6-8, so the harness is for a small person.