You aren't the first person I've heard get these crossings mixed up but I don't know where the confusion came from. Amen Corner AHB was nearer Bracknell (Beehive Road I think) than all the ones you mention and has been closed for many many years. Wokingham MCB is obviously operated by Wokingham box, who also work Star Lane MCB-CCTV on the Easthampstead Road and supervise Waterloo AHB on, funnily enough, Waterloo Road (the phrase 'Waterloo AHB' has caused a few raised eyebrows to the uninitiated over the years

). Waterloo AHB is due for closure soon I believe, as there's a major road scheme around Wokingham which will bypass the crossing with a bridge. You will be waylaid no more...