BFI is a holding preview of A Pocket Full of Rye on Sun 8 Mar 17:10 NFT1. Julia Mckenzie will be at the QA as well. You can read more information here.
Thanks to Lorna for this information.
Edit: JaneV called the BFI and they could not confirm if A Pocket Full of Rye will be shown. A Marple film with Julia Mckenzie does suggest it will be this one.
2nd Edit: The March BFI guide says (thanks to JaneV again)
"We are delighted to be able to preview one of a quartet of brand new feature-length Christie mysteries featuring the debut of Julia Mckenzie as Britain's favourite spinster sleuth Jane Marple. At press time, we are unable to divulge which of the four dramatisations A Pocket Full of Rye, They do it with Mirrors, Why didn't they ask Evans? and Murder is Easy - we will be screening, but please keep an eye on programme updates and our website"
