Oddly enough, there is another person in Spain needing to rehome their Basenji puppy. The fellow's girlfriend does not like dogs. The topic is "Basenji puppy for adoption (Spain)" and the guy is @Luc21. Hope you can contact him.
Please do plenty of research before making a decision to have a Basenji.
Where are you in the UK? - if near to me you are welcome to visit my Basenjis and talk Basenji talk. I'm no longer breeding but I think it's important to visit Basenji homes before making decisions. As Benkura says there don't seem to be any female pups available at present. The plus of that is that you've plenty of time to see as many Basenjis as you can. Most breeders are like me and would be pleased for you to visit with their Basenjis.
I have a cat and have added two Basenjis since she and I came together. She is in charge and I encourage her to "train" the dogs. Our male (Guppy a BRAT rescue) has given her a little more trouble than most dogs (I guess she gives him a pass because he's cute-I wish she wouldn't though!). We have our moments (Guppy is a teenager and living up to the name Mr. Grumpy Pants) but we seem to be getting along just fine.
In addition to checking out the Basenji Club of America's Breeder Directory, take a moment to read through the information at http://www.basenji.org/learn to see the types of questions you should ask a breeder.