Cook bacon pieces in a stock pot over low heat; when bacon is cooked to your liking, remove and set aside on paper towel; remove all but 2 tablespoons of bacon drippings from stock pot.
Add butter to stock pot and increase to medium heat; when butter is melted, add onion and celery; sauté until vegetables are tender (~5 minutes); stir in garlic, Tabasco and Worcestershire sauces, the herbs, salt and pepper.
Add flour; stir continuously until roux forms; gradually stir in broth, half & half, cream and clam juices; add bay leaf and bacon; bring to a bubbly boil; reduce heat to low, cover, simmer 20 minutes, stirring occasionally.
Add potatoes; increase heat to medium to return to bubbly boil; reduce heat to low, cover, simmer ~25 minutes, until potatoes are tender.
Stir in clams; remove bay leaf; continue to simmer ~5 minutes more.