Bottom bracket

Hi I'm looking for some help my bike is around 10 months old and done about 1200 miles and my bottoms bracket seems to be make a lot of noise when I'm pushing hard and going up hills more so on hill climbs. I have been using my bike through the Scottish winter and keeping it well maintained and washed down after rides (with cloth and water) does anyone have any ideas what could be wrong. My bike is a Merida race lite 900 all help appreciated