(Reuters) -British homebuilders Bellway and Crest Nicholson Holdings said on Tuesday upbeat house prices spurred by strong demand will continue to offset higher costs, brushing aside any slowdown concerns in the housing market. UK house prices have continued to rise, underpinning the booming demand for new homes in an undersupplied market, although the pace of growth has slowed in recent months. Some industry analysts had expected the market to cool as surging costs of everything from fuel to home appliances put pressure on household finances, while prices of key raw materials including steel …