Would Tamron AF18-200mm F/3.5-6.3 auto-focus on the Nikon D5100? - 1

Any help would nice and if you could recommend any other lenses in the same price range would be lovely thank you

Yes. Btw Tamron lenses are brill but cheaper and equally good lenses are sigma lenses, have a look online for them.

Here is a review of the Tamron 18-200mm
http://slrgear.com/...170/cat/23
Here is a review of the Nikon 18-200mm
http://slrgear.com/...281/cat/13
You don't save money buying a cheaper lens that produces empty magnification at the longer focal lengths. It just squanders money that might have been saved toards something good.

This shot was taken with a Nikon 18-200mm at 200mm

I have the Nikon 18-200mm VRII lens and it is a very good lens, but at $800 it is not cheap. You can buy a refurbished 18-200mm - which is the new model (same one as I have) for under $600 US:

http://www.adorama.com/...0DXNR.html

Not sure what you can find in refurbished lenses in your country, but I would rather buy the better Nikon lens that is factory refurbished than the Tamron.

You'd have to make sure it's motorised - ask before you buy.