hi just wondering if any one can help,

problem when putting into reverse, no reverse light's come on no muting of the radio, also parking sensor's not working, checked fuse's all ok

There'll be a micro switch that triggers those bits.  Probably in the gearstick assembly somewhere.

 

Would help people figure it out if you had a more descriptive title and gave your make/model/year/engine/gearbox.

its a skoda octavia estate 1.9 tdi 2008

 

What you need, if you haven't sorted it already is a reverse switch 

https://m.onlinecarparts.co.uk/spare-parts/skoda/reverse-light-switch/octavia-1z3.html 

 

Dead easy to sort takes about 10 mins