Thanks for all the help with this , everything went ok, although i wasn't expecting to lower the coffin into the ground, that was a very sombre experience 
Yup .. sort of gets to you that bit .. although I once had to lower a foriegn made coffin - Serviceman had died overseas - that was not "slab sided" like UK ones .. and it got stuck half way down !! ... it was also very heavy being lead-lined .... little bit of muttering between the 6 of us .. bent arms and raised it about a foot and a half, then dropped it back down ... it dislodged the offending lump of earth and dropped past it .. one hell of a "jar" as the slings re-caught... we were taken to one side after by the vicar and he actually bought us all a pint !! He had seen it all of course, but not a single member of the watching family and guests had noticed anything amiss !!
In all the funerals I've been to, as a pall bearer (5), an usher (4) or just as a "friend" (too many) the part that really gets to me is the flypast as the coffin is lowered, don't know why .. but that hits home .. hard ..
