Thank you Hew! that was very helpful and I appreciate the info on the fire resistant cabinets.

The building is is being completely renovated with escalators being removed so even though we don't specialise in heavy lifting and machinery, we may be able to get them moved at the same time by the workmen! (Its on the second floor as well! )

For the chubb, I do have a photo of the doors

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and also the number thats on the stratford. (as you can see it looks like someone just stuck it on hence why im not sure if its the serial number)

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If you do come across the stratford brochure that would be very helpful as it would make a big difference to find out if these cabinets and safes weigh closer to 4000kg or 1000kg.