First let's talk about both. As of the time of writing this article there is no official recognition by any organization of the difference between an English Labrador Retriever and an American Labrador Retriever. All Labs are registered as that, Labrador Retriever. The difference is such that the English Labrador Retrievers are more common across the pond in the UK and the American Labrador Retrievers are more common in North America.
To make it very simple, the American Labs are in general a little taller, a little leaner and better suited for agility and hunting trials as they are more athletic. The English Labrador Retrievers are thicker and a little shorter. They are the conformation labs or Show dogs.
There is no clear line where an American Labrador Retriever stops and an English Labrador Retriever begins. So you can't completely place a stamp on one or the other, rather one Lab might be more American Lab in certain ways and English Lab in others.
Here you can see one of our English Labrador Retrievers in front of the wood pile and one of our American Labrador Retrievers on the grass. What some call a Field Labrador is a dog who is somewhere in the middle of an American Lab and a British Lab. As breeder, we will at times mix the two styles together or breed within the same style in order to achieve our breeding goals.
When choosing your Labrador Retriever I want you to consider that the important things should be health, intelligence and temperament. It doesn't make sense to have a dog you love to look at if the vet bills are in the thousands, they are not easily trainable and end up eating your table legs, couch, carpet and walls. The important factors for you to have an enjoyable experience with your Lab for ten to fifteen years are that it listens to you and is healthy. You will fall in love with who he/she is not how pretty she is. We normally don't even talk temperament with our Labrador Retrievers anymore because we have been developing the bloodline for over 12 years. There are no ill tempered dogs in our stock. All are great with children, people with disabilities and other animals. That is if they are trained and socialized properly. You can't take royalty, raise them in a prison and expect miracles. For the training side, we highly recommend PuppyTrainedRight.com to get started. The site is excellent at providing you all the information on bringing your puppy home, socializing it properly, training it in basic commands and housebreaking/crate training it. Their slogan is "Train, Don't Complain." We tend to agree.