The British weather is unpredictable and even in the summer you’re not guaranteed sunshine and warm weather. This means that warm clothing is still important on some days, but you may want to choose clothing that’s not too heavy.
Having a light cardigan can keep away the chill from the wind, and it can easily be unbuttoned if the weather warms up ever so slightly. Another good option is a light nylon jacket, ideally brightly coloured for a more summer feel.
These jackets are not thick and they can easily be folded away and placed in your handbag, while they’ll keep the rain of your back if a sudden shower arrives. Make sure you stay warm on those peculiar summer days when the weather takes a dramatic turn for the worse, and wear light, warm upper body clothing.