They very purposefully made themselves sound like an English group to capitalize on the British Invasion. Other American groups like the Beau Brummell’s (“Laugh, Laugh”) did the same.
That song and the others by the Beau Brummels were produced by Slyvester Stewart of Sly & the Family Stone.
The Beau Brummels made a brilliant move, naming themselves after Beau Brummel, a nineteenth-century English hustler, giving them a British connection, and whose name began with "Bea," which would result in their records being placed next to those by the Beatles and Beach Boys in record stores.
Like the Sir Douglas Quintet out of Texas and the Buckinghams out of Chicago.