I've done two first responses shown in the picture however when I do other tests they are much fainter lines, any help??

Those look clearly positive to me Hannah, congratulations! First response are very sensitive, so if the other tests are less sensitive the lines will be fainter on those tests. Do you know what sensitivity the other tests are? It should say on the box

I think it detects a sensitivity of 25mlU/ml or greater reading this?? 

I've just done a digital one too now so I definitely am!😬😬😬

Yep first response is more sensitive than 25miu test so thats why the lines were darker, and there's your digital to prove it so big congrats hun!

wishing you a happy & healthy pregnancy xx

Yay! Thank you!!