CREATE TABLE "table1_2430014_6" (
  "series_no" real,
  "episode_no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "uk_ratings_bbc2_rank" text,
  "original_air_date" text
);

Question: Name the total number directed by for " france : cap gris-nez to mont-saint-michel "
SQL: SELECT COUNT("directed_by") FROM "table1_2430014_6" WHERE "title"='\" France : Cap Gris-Nez to Mont-Saint-Michel \"';

Question: Name the written by for john trefor
SQL: SELECT "written_by" FROM "table1_2430014_6" WHERE "directed_by"='John Trefor';