Can you trust the landlord who promise to clear out his stuffs in the flat you are going to rent?

So I am looking to rent a new place. This new place has got a few bit furnitures that I requested to move way when I move in. Estate agent said ok but today they said the landlord said the removal company let him down and the unwanted furnitures wouldn’t be move after I moved in. I am not very happy with that. Can I trust landlord to move his stuffs after I move in? Or should I insist they should move out before I move in as agreed? Anyone please give me some advice. The flat is in London.