Can I use my iPhone 5 in England on their network?

I didn't know how to word the question but besically this is what I'm trying to say. My cousin visited over Christmas break and brought a blackberry to use. I took him to tmobile and he got a SIM card on their unlimited talk, text, and web plan for $60.It wasn't a contract and pretty much after the month if he wanted more he would of bad to pay another $60 for the next month. Now my question is if I can do the same but in England and with an iPhone 5? Ill be taking loads of pictures and videos and I want to upload then into my social networks. However, if I do it on Verizins international data plan, I'll only get 50gb or mb before they charge me another $25 for going over my data. Is there a wireless provider in England that will sell me a sim car that'll work on my iPhone so I would only have to pay one monthly rate for unlimited talk, text, and web. It doesn't have to be all three. Just as long as I have Internet?

Why does my iPhone 4S keep saying there's not enough storage?

My 16gb iPhone 4S keeps popping up with a little box saying there's not enough storage every time I try to take a picture. I'm travelling atm so not being able to take pictures is pretty annoying.
I have previously deleted loads and loads of things to make room for all my travelling pictures and I just don't understand. I've tried resetting it, is there anything else?

I lost my iPhone 5 for sprint. If sim card is removed will i be able to find it?

My phone died and i dropped it somewhere. When i went to track it it said the phone was offline. I reported it lost/stolen with sprint and i filed a police report. Sprint said that re restricted the phone and when it turns on i will be notified. However if the SIM card is removed will i still be able to find it? Will i be notified when the phone is turned on? Will the phone track? Will the phone still restricted? Or does someone have a new iphone 5 now?

Is imessaging with iPhones free?

I'm in Korea using only Wi-Fi and want to text my friend in the US who uses Wi-Fi and 3G. Would imessaging be free? Even if one is on Wi-Fi and one is on 3G?

IPhone has some water damage

I put my iphone in my shoes when i went swimming and when i got out i put my hand in there and now the sound is all messed up. My iphone 5 is in a bag of rice right now, should that help? If not, please give more advice. I constantly play music on my iphone so its important.

Can I use my iPhone on an airplane?

I wouldn't be texting/calling or using the Internet. I would just be playing games and have it on "airplane mode". I'm flying from fairbanks to miami (with a stop in Seattle) if that makes a difference.