Brought disc but wont seem to read on Xbox one s?

That is correct! The next generation of Xbox One S wont feature a disc drive. While other Xbox One S with disc drives will be available.

Nope, it seriously just sits there and does nothing. It doesn't even say it's the wrong disc, nothing. Every single xbox one game reads with no issue at all, bot a 360 disc seems to just not work. Have I bought the only dodgy xbox one s?

Yeah...I have already brought that up on another thread after reading in the "Your Guide To The Xbox One" mag that there will be no disc or XBLA backwards compatibility with the 360.

I perfer digital copies, mostly because my xbox one wont read discs right now.

Xbox One discs are Dual Layer BD-ROM discs 50 GB, which is pretty much standard now. In addition, the One S and the One X can also read UHD Blu-ray feature film discs. Neither the One S or One X can read BDXL discs, I don't know enough about the hardware
to say for sure if this is due to a hardware or software issue. Note that despite the similar storage capabilities, UHD Movie Blu-ray discs are factory pressed, while BDXL is a writable format largely for burning discs with a PC.

Despite the One S and the One X's ability to read UHD discs, they will not be used for Game media.