On the evening of Wednesday 21st August my partner and i were visiting the local nature reserve we volunteer at with a member of the Parks Trust team (Elfield Park nature reserve located behind MK bowl near Furzton Lake in Milton Keynes, Buckinghamshire) when a cat walked down the pathway and followed us for the hour-hour and a half we were there meowing constantly. When we came to leave my partner and i offered to take him to a local vets to see if he had a microchip. Unfortunately he didn't. As this area is a fair distance and main roads away from housing estates we decided to take him and the first night he was kept in a cat carrier in our car as we already have a cat we took in from a rescue centre who doesn't mix well with others. Our house is very small with the only rooms that can be seperated being the bedroom and the bathroom. We decided to bring him into the bathroom yesterday as hygenically couldn't keep him in the car any longer. Our own cat is quite distressed at this. We have called every cat shelter organisation we can find and no-one is prepared to take him. The issue is that the member of the Parks Trust staff is prepared to rehome him permanently but is on holiday for the next 2 weeks so would need somewhere for him to stay during this time. We cannot keep him in our house, being in the bathroom is not working out - we now have a leak coming through our bathroom ceiling to our kitchen (from the toilet - nothing to do with the cat) and will be calling the landlord out regarding this. In our tenancy agreement for the property we paid a deposit to have one cat live with us so obviously are breaking our terms by alllowing this other cat in the house. Having exhausted all of our avenues (family and friends, neighbours, shelters, RSPCA, HULA, Cats protection, posting found flyers) we are at a loss as to what to do with him other than take him back where he was found. Obviously we desperately didn't want to have to do this but are faced with no other option. He is very calm and quiet, eats and drinks well although seems to have a touch of diarrhea although this could be due to the dry food we are feeding him. He has not been neutered as far as we can see. If you can help in any way or could offer some advice as to who can we would be incredibly appreciative. If not, thank you for taking the time to read this.