Thanks guys! Definitely not disheartened, like you say Looby, we know the plan works, so it's not like I'm wondering why on earth I've gained. The past few days have also been massively off plan, but again, all planned so fine. Today was the last day going crazy with food. I have 3 days left in the UK before Japan, all of which will be on plan. The flight may be tricky, but I intend to have a good meal before my flight, and take plenty of fruit/good snacks for my flight. Or before? I haven't flown for 10 years, I'm not sure what I can and can't take in my carry on luggage :P
This is the first time I've gone absolutely mental with food on SW for several days, I've seen people have 9lb gains or so and lose at least half the week after, so like you say Looby, I'm hoping my body can do that. Whilst I'm not in any doubt I've put some extra "genuine" weight on, I'm hoping the fatty/sugary foods are just making my body hold on to more water than usual too :P
I've stuck with the exercise too, so hoping that can at least counteract some of the damage I've done, aha. Really didn't want to go for a run on Thursday, but knew I'd possibly feel crappy for not going, so forced myself out the door :P
Milly, you probably didn't even gain at all then! It varies on the person of course, but I once weighed myself in the morning and again at night on the same day, and there was a 3-4lb difference.
Welcome to the forum Stephie! And good luck with the weight loss journey

I'm coming up for my year anniversary, Slimming World is one of the best decisions I've ever made
Well done on the loss Looby, especially with the meals out!