Hi all

Okay first of all can anyone tell me the name of this pant please.
I inherited this plant in the spring last year it flowered really well towards the end of the summer i think.
The problem is its not looking very healthy i really want to do something about it to make it well again.
I think it needs repotting in some fresh soil but im not sure which soil to use i'm pretty sure my dad used to use the acid soil but not 100%.
Also i am not sure what feed to give it as i'm not sure what the plant is called.
The leaves are going light yellow and quite a few has black/brown spots on them.

Thanks for everyones help in advance its such a nice plant i will be gutted if i lose it this year.