I went to a work colleagues funeral couple years back – hard not to seeing as I worked with him for 2 years side-by-side in our small team of 3 (he died of a epileptic fit). I only went as far as to meet his family on the day of the funeral at their house in Newham – consoling them at their time of grief and sorrow with words such as he was a good easy going guy, was a pleasure to have known him, he spoke highly of his family etc. When it came to leaving the house for his cremation at the local crematorium i made my excuses and left though politely told a couple of my work colleagues the actual reason why I cant come (which they perfectly understood without feeling bad) I think we, as a family, have always done the same for non-muslim neighbours/locals we’ve known for years. personally speaking i defi wont ever go as far as church, temple etc or even 'inhouse service'. ever.