What time does the London Stock Exchange open & close?

Could you please elaborate on the operational hours of the London Stock Exchange? Specifically, I'm interested in knowing what time the exchange opens for trading and what time it closes. This information is crucial for investors and traders alike, as it allows them to plan their trading strategies accordingly. Additionally, any changes or variations in the usual trading hours would also be valuable to know, as they could potentially impact market movements. Thank you for your assistance in clarifying this matter.