For a cheap mountain bike, the Apollo XC.26 is a good starter bike. Sold by Halfords, it is currently on sale for under 120. For 120, the bike comes with 18 Shimano gears and powerful V brakes.
My Apollo XC.26 I bought from Halfords for the snowy weather. It rides fine for the price.
Mountain bikes under 200 are geared towards a lighter riding. However, with their cross tyres, they will perform quite well on the road as well as off-road.
Like all Halfords bikes they come with free fitting and assembly and a free check up on 6 weeks. It comes in only 3 sizes, 14 inche, 17 inch and 20 inch. These sizings may be less than optimal for some users, if you are going to be doing a lot of riding, you want to make sure you get the right size. (see MTB Frame Size guide)
Apollo MTB at Halfords
Mountain Bikes at Halfords
at Amazon.co.uk
at Amazon.com
Apollo XC.26 is a good start but i have trek as my starting bike..it is kinda expensive though but as long as it has a good v brakes…that will be good