Can I buy a DSLR (Nikon D5300) and not pay vat?

So I am from Tunisia and I will be visiting the UK this summer, and I am wondering whether if I can buy it from usa and shipping it to london and on my departure from UK taking it with me to Tunisia without paying the VAT cause I won't be using or opening it in UK Land, I know this procedure exists but I don't know how to do it.
With Thanks to all

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Sigma lens 35-80mm - need adapter?

Hi guys, I have an old pentax that I've only just realized has a detachable SIGMA 35-80mm lens. I have recently bought a NIKON D3100, and I was wondering is there like an adapter or a mount I can put the lens in, to be able it on my Nikon?

Thanks.

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How to turn the flash off and the sound off on my D3200 Nikon camera?

I can't see it in the guide, so can someone help? I need to turn the sound and flash off, Also I have just turned my camera on and I have dark red hair and red lipstick on yet the camera makes my hair and lipstick appear a orange colour

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Using a battery grip without battery in it?

This is something I really need to know before I rush out and buy me a Nikon D610 and a Pico battery grip!
I want a battery grip because the Nikon body is not big enough for my hands.
Now, please clarify, will the battery that is inside the Nikon body be enough, or is it compulsory for me to use battery, extra battery, inside the Pico battery grip to enable it?

I do not think I might ever use the portrait orientation.
I just need the grip to make the Nikon body look and feel bigger for a better hold.
So, will everything be ok if I am on just one Nikon body battery?
Your help is much appreciated.

I am from India

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Entry level DSL-R camera?

Hey, i am looking for an entry level Dsl-r camera. I did my research and came down to these two cameras
* Nikon D5300
* Canon 70D
I want a nice Dsl-r with good results and one which would last long enough for me to take snaps on a sightseeing tour or so. Nikon or Canon? Always difficult to choose between these two brands. Would love some professional advice and some experience sharing would be appreciated.

THANKS.

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