Apologies if this has been used in the past, but in this period of Christmas shows, pantomimes and the like, we thought it appropriate to include this picture of a performance by a group of youngsters. We are not sure what it is of, where it was taken or when - probably more than 40 to 50 years ago, we think - but we know there are a lot of familiar faces among the cast. How many of them do you recognise?