German Shepherd looking for loving home

Leo is a 9 year old German Shepherd cross, however he does not act 9 by any means! He still loves big walks, playing and being active, but also loves the opportunity to chill and relax in the garden!
He is looking for a new home due to a change in circumstances, through no fault of his own. He has been in the same household since he was 8 weeks old.
He needs a new quiet home, with absolutely no children (teenagers may be ok, but no small children, and no cats.
He walks well on a lead, is microchipped and knows basic commands.
He can be left in the house for around 4 hours, he will not chew or be destructive.
He has lived with another dog, a younger smaller bitch.
He takes daily medicine which he takes no problem, and this costs £15 per month. Inexpensive but mandatory.
He is reactive to other dogs if they are large as he was attacked at a young age by a bull mastiff, however typically takes no interest in other dogs if out of a walk.
He is looking for new experienced owners of the breed and the quirks that they come with.
He has no problems with his back legs like a lot of older shepherds and is fit and healthy!
He is incredibly loyal and will get incredibly attached to his new owner.
He will only go to a suitable home with a secure garden and the knowledge that he is in great new hands.
For more info, please text.

Thank you