Well, I was at the London one today. Unfortunately, I had to rush my team (only just managed to complete it in time for the registration), so I didn't get any practise with it. As such, I lost in the second round, to a Bronzong. I hate those things :( At least I beat one person (it ended up with my Marowak and Dusknoir against his Zapdos and Electivire) :)
I also talked to Kinneas, and saw Havak and GEC but didn't talk to them (sorry). I also battled a YouTube battler (can't remember his name), who recorded our match. While waiting for the juniors to start, I gave some noob free legendaries :D Sadly, his actual team's levels were in the 20s and 30s, so he went out in the first round.
My little brother entered the juniors with a Rain Dance team. Since he performed better than me, I'll list it here:
Timid Manectric @ Damp Rock - LightningRod
31/x/31/31/31/31 - 4 HP / 252 SpA / 252 Speed
-Rain Dance
-Light Screen
-Protect
-Thunder
Adamant Gyarados @ Lum Berry
31/31/31/x/31/31 - 4 HP / 252 Atk / 252 Speed
-Dragon Dance
-Taunt
-Waterfall
-Stone Edge
Everstone's Modest Kingdra @ Life Orb - Swift Swim
31/x/31/30/31/31 - 84 HP / 4 Def / 248 SpA / 172 Speed
-Hydro Pump
-Dragon Pulse
-Toxic
-Protect
Kursed's Adamant Azumarill @ Choice Band - Huge Power
31/31/30/x/31/27 - 252 HP / 252 Atk / 4 Def
-Aqua Jet
-Waterfall
-Double-Edge
-Superpower
Anyway, it turns out only 13 juniors actually turned up :P I think one of them might have been disqualified (they checked everyone at the beginning, since there was so few people). My brother therefore didn't have to battle in the first round.
I can't remember the details, but I do remember a few things about the battles. The first person he battled used a Spiritomb and Garchomp. Manectric started with a Rain Dance, while Gyarados Dragon Danced. Garchomp Dragon Clawed Manectric (doing little damage due to Intimidate), and Spiritomb put Gyarados to sleep with Hypnosis (which then promptly woke up with Lum Berry). Next, Gyarados Taunted Spiritomb, and Manectric Thundered it (or Light Screened; I can't remember). Garchomp dug underground (yay Digchomp), and Spiritomb used Ominous Wind on Gyarados. You can predict what happened next; Manectric Protected and wasted Garchomp's Dig, and Gyarados attacked it with Waterfall. Spiritomb did more minor damage with Dark Pulse. Gyarados then took out Garchomp, and from then on, it was pretty much GG. Spiritomb fell to a couple of Thunders, and both the opponent's remaining Pokémon were OHKOed by Gyarados.
The second match was quite similar to the first. Strangely, his second opponent also used a Digchomp (which met the same fate as the first one). I can't really remember what happened in that one, other than that the opponent's Magnezone was OHKOed by a critical Waterfall. In short, he 4-0ed his first two opponents.
Since there were only 13 people, my brother's next match was actually the final. His opponent came all the way from France or Belgium (not sure); the TV was connected up to the opponent's game, so disappointingly, the whole battle was shown in French. I can actually remember what happened in this one, so I'll post it here.
My brother lead with Gyarados and Manectric again, while his opponent started with Vaporeon and Ninjask. As my brother's team relied on Rain Dance and water moves, Vaporeon was possibly one of the worst opponents he could face.
Turn 1
Manectric set up a Rain Dance.
Ninjask used X-Scissor on Gyarados, not dealing much damage.
Gyarados used Dragon Dance.
Vaporeon used Surf. Because of the rain, he ended up KOing his own Ninjask, as well as bringing down Manectric.
My brother sent out Kingdra, while his opponent chose Sceptile.
Turn 2
Vaporeon Protects.
Kingdra Dragon Pulses Sceptile, doing some massive damage.
Gyarados Stone Edges Vaporeon, which protects itself.
Finally, Sceptile Leaf Storms Gyarados, KOing it.
My brother sends out Azumarill.
Turn 3
Kingdra KOes Sceptile with Dragon Pulse.
Vaporeon Surfs again, not dealing much to Kingdra, but about 1/3 to Azumarill.
Azumarill uses Double-Edge on Vaporeon. Surprisingly, due to Azumarill's Choice Band, it OHKOes it.
The opponent sends out Garchomp. For some reason, when I saw Garchomp's name come up, I thought it was Toxicroak... I guess its French name, Carchacrok, looked like 'croak'... At least Garchomp can't have Dry Skin :P
Turn 4
Kingdra Dragon Pulses Garchomp. Rather irritatingly, it survives with about 1% of its health left.
Garchomp Earthquakes. Due to both Pokémon having a lot of EVs dumped into HP, both Azumarill and Kingdra survive.
Azumarill KOes Garchomp with another Double-Edge, getting the win.
So, my brother won the London juniors. It looks like I might be going to Worlds with him :D