11 players across three age divisions - Junior, Senior and Masters - were decided over a series of contests in Birmingham's NEC last week.
The winners will go against others from the USA, Canada, Japan, Korea and Europe in Hawaii this August.
Players competed using Pokemon Black and White on Nintendo DS, and were able to select fighters from the full National Pokedex for the first time.
The UK tournament was marred by an alleged poo fight by the Spanish team in a hotel corridor.
Pokemon Black and White 2, the first direct sequel in the main franchise, will be released on Nintendo DS later this year.
Watch a teaser trailer for Pokemon Black and White 2 below: