Lee and Perins Worcestershire Sauce. I might have spelt it wrong.
If it's just tomato juice, I like it with L+P. I put so much in the tomato juice almost goes black, but I'd use it sparingly at first as it's quite strong, and make sure you stir before drinking.
If you like that, then try a Bloody Mary (don't bother if you don't, the addition of vodka won't help you!)
For a bloody mary, as well as the tomato juice, L+P and a shot of vodka, I'd also include a few shakes of tabasco and some sea salt and a twist of black pepper. Maybe some ice, unless the tomato juice is very cold. If you're posh you could also add a dash of dry sherry. I've also had it with horseradish, which I liked as well.
If your palate doesn't like spicy/hot things, you don't have to have much L+P or any tabasco.
It's a long drink (not a shot) so the main ingredient is the tomato juice.