I'm wanting to get a new radio fitted for my 2009 ford focus titanium so that I can have reverse camera installed and see it on the screen. Has anyone had experience doing this and can recommend one? Would be much  appreciated  thankyou 

Lots of topics in the Focus section have covered this - Aliexpress and eBay have a big selection of Android or maybe Windows CE based units you can pick from. Choices typically are either units with oval face that fits into your standard Ford fascia or larger versions with touch screens that come with a bespoke replacement fascia that replaces the original one. 
 

Most of these units all have extra USB ports, GPS antenna connection plus video in for a reversing camera input. 
 

Lots of brands to choose from, most you’ll never have heard of before. My Android unit is Ownice, Xtrons is another brand that seems common. 
 

For the reversing camera I’ve gone for the type which fits into the tailgate finisher and replaces one of the number plate lights. Comes with an LED so it still provides light for the number plate. Bit of wiring needed to wire that in plus powering the camera off your reversing lamp then couple of wires down the length of the car to your head unit connection. Alternatively some cameras send wireless camera signal but still needs powering from reverse lamp etc.