Foreign firms are increasingly looking at the UK for investment opportunities as the economic slowdown has pushed down the price of assets.
At the same time, problems in the eurozone have made the UK, which is not part of the European single currency, a more attractive and stable destination.
Earlier this year, Chinese telecoms and computer network firm Huawei Technologies said it was going to invest £1.3bn expanding its UK operations.
And while UK Prime Minister David Cameron said the investment showed that the UK was "open for business", similar moves in other countries have raised concerns.
Last month, the US claimed that Huawei and another Chinese firm posed a security risk and warned against doing business with them.
In a separate move, US President Barack Obama blocked a wind farm deal involving Chinese firm Ralls Corp, citing national security issues.
Australia, meanwhile, has previously blocked Huawei's plans to bid for work on its national broadband network.