EastEnders' Lacey Turner has admitted she is "petrified" of her first London Marathon on 23rd April.The Stacey Slater star, 34, is reuniting with Jake Wood and Adam Woodyatt, as well as joining co-stars Tanya Franks, Natalie Cassidy and Heather Peace, to run for Alzheimer’s Research UK in honour of Dame Barbara Windsor. Dame Barbara Windsor tragically passed away in 2020 aged 83 after being diagnosed with Alzheimer's in 2014, the late Peggy Mitchell actress and her husband Scott Mitchell went public with her diagnosis in 2018 in a bid to help other people or families battling the disease.