For the past two weeks a cat its huge has decided to try & move in to my house , he doesn't have a collar & is not neutered & looks to be a moggy .
I have 3 cats of my own who seem to let this cat do as he pleases , such as be in charge of my garden (I have seen him kick other neighbour hood cats out of my garden) .
I keep my conservatory window open as my cats are outdoor cats but I can't let this cat in so having to keep it shut as my cats make useless bouncers 
Apart from this past two weeks I have never seen this cat before .
Of course im not feeding him & his fur looks in good condition & he is very tubby .
I haven't a clue what to do about him , I can't get near him to get a photo & I know he doesn't belong to any of my neighbours