This special event is being hosted by Cineworld in Ashton-under-Lyne and will be raising money for BBC Children in Need along with Elisabeth's own charity.
The event will feature screenings of School Reunion and selected episodes from The Sarah Jane Adventures.
There will be special invited guests, character photo opportunities and a charity raffle too!
Tickets will be available from July via Cineworld's website here.
In 2009, Lis recorded this message for Hyde Fundraisers.