Are the funds sent by a British insurance company as a prize, which came through a random selection of emails, permissible or impermissible (halal or haram), and is it permissible for the recipient to take them and give charity from them?

The prizes offered by insurance companies include both permissible and illicit money. Therefore, the company is considered to be in possession of mixed funds. It is disliked, but not prohibited, to accept its prizes, unless it is known that the money is from illicit sources. It is permissible to accept them if doing so does not aid the insurance company in continuing its operations or encourage people to deal with it, although it is better to avoid it. Such messages are often fraudulent.