
I'm sure your local funeral director will know the best way of approaching their clients with your information. I'm struggling to word this post but will give your letter a shot.
Just remember that they are, at the end of the day, a business. You are writing business to business, you're not writing to someone who has just lost a loved one.
Dear Mr .....
I am writing to introduce myself to your company. My name is.... & I am the managing director of .....Catering. We are looking to expand our business locally & believe that we may be of assistance to your clients during their time of need by providing both of our services at the same time (
I want to say one stop shop but that is incredibly tactless, sorry!) I have enclosed some examples of my work and a number of venues that your clients may find useful if they did not wish to use their own homes.
Perhaps we could arrange a suitable time for me to discuss this with you further.
OK, this isn't perfect in any way, but as I don't know whether you've looked in to advertising, venues, menus etc. it's a bit hard to decided what to include in the letter.