An LT for £300? Be very careful in that price range. They hold their money like Land Rovers and for obvious reason, they are a very good bike.
My lad has had a few bikes now, his first one was a Kazuma 50. They aren't one of the "big" names but it was a cracking little tool, great little four stroke engine, it never let us down and I'd have another. I sold it to my pal who's young lad uses it nearly every weekend and its still going strong. Spares are easy to come by.
His next bike was an "eBay" job, a Chinese cheapy and you could tell. Soft metal, flimsy plastics and the engine had a bit of a personality. I wouldn't buy another.
His latest bike is an Adly Moto, it is a 100cc 2 stroke autolube, electric and kick start, semi auto box and is just a little smaller than a full sized quad. It's EXTREMELY fast and able, I'm 17st and it flys with me on it. Not really suitable for your needs.
The Kazuma gets my vote.