1ac- a banking centre on top gets the maximum amount (8) - ??????T?
1d - "dear sir", typical letter starts, outwardly flirtatious (6) - ??????
13d - contact artist for captivating work (4-6) - ?A?E ??????
23ac - butcher ultimate butcher! (8) - ???????E
25ac - suggest it's personal (8) - ???????E
27ac - gold coin, last of money as standard (8) - ???????Y