Fraser Bond are the leading lettings and property management agents for Postmark - London EC1A. Postmark is a new development on the site of the former Royal Mail Mount Pleasant Mail Centre on Farringdon Road in London EC1. New Homes For Sale Phase 2: Signature Place launched 26th February 2020. Expected completions from Q3 2022. Two Signature Place launched in summer 2020. Completion 2022/2023. Phase 1: West Central 1, the first phase of this iconic development comprised studios, 1, 2 and 3-bedroom apartments designed by Conran + Partners. Phase 1 completions from Q4 2020. Amenities.