It's my first time building a pc and i would like to see if people can make it better or add more stuff to my build.
No over £3500 Budget.
can you give us an actual link to your build?
this is his link
If your choosing the outdated parts because you already have some of them, then your build is pretty good, but if you don't I have an updated list here.
Go with the newer i7 -4000 series because they will offer more compatibility and power.
I bumped you up to quad channel memory and hex core CPU.
I switched your PSU out with a better brand because Seasonic isn't that reliable.
I also changed your sound card to the top brand on the market.
i believe this would be better and saving you more money
PCPartPicker part list / Price breakdown by merchant
this is the actual money in british pounds