Brompton, the UK’s largest bicycle maker, has said it is planning to reduce its dependence on China and Taiwan for parts, amid fears of a growing military threat to the island from Beijing. The company known for its folding bikes is among various western firms hoping to ensure they can source supplies from other countries, as concerns mount over rising geopolitical tensions, and even a possible future invasion of Taiwan by China, which considers the island to be a breakaway province. “I think it’s pretty prudent because there are risks…