Curious

Dear Forum Could you please help me as I'm stuck. We've just undertaken a loft conversion necessitating fire doors. Our local council is the London Borough of Richmond upon Thames. I spoke to a door manufacturer today following an enquiry on their 4 panel door range. The advice I received was: The max trim off our doors is: 10mm off each rail and also the bottom of the door. 3mm off the top. Most fire door (FD30) sizes come as either: 1981 x 762 x 44mm / 1981 x 610 x 44mm / 1981 x 813 x 44mm. The fire door sizes we need are as follows: Top floor: x3 single doors: 1. 194cm x 75cm x 3.5cm 2. 194cm x 73cm x 3.5cm 3. 193cm x 74cm x 3.5cm First floor: 1. x1 single door: 195cm x 74cm x 3.5cm 2. x2 double doors: 194cm x 58cm x 3.5cm Ground floor: 1. x1 single glazed door: 196cm x 76.5cm x 4.5cm (dinning) 2. x2 double glazed doors: 193cm x 58cm x 4.5cm (living) Please can you advise what I should go for. How much I can trim if I buy slightly over-sized doors. I want to avoid BESPOKE doors as expensive and have long lead times as I need doors installed within 2/3 weeks max. Thanks a million!