LONDON :Britain secured a deal to unlock 7.5 billion pound ($10 billion) in investments with Japan's Sumitomo Corp, funding clean energy infrastructure such as offshore wind and hydrogen projects over the next 10 years, the government said on Wednesday. Investment minister Poppy Gustafsson announced the deal during a trip to Japan, which she described as a huge trading partner. Gustafsson said Sumitomo was historically a big investor in UK energy projects and the new agreement would "really