Lost cream British short haired cat

[MToole]

My parents live in Therapia Road & have been looking after my British shorthair cream cat (picture attached). He has been missing since Monday 24th July. If anybody has seen him during that time could you please let me know. We are very worried about him. He is chipped but does not have a collar on. He is a very big cat but may have obviously lost a lot of weight in that time. Many thanks.