Colnbrook is close to Heathrow, and hotels have to stay open.
The way to deal with it is to work a corridor at a time and leave the rest of the building as it was.

Where the gaps are in a hotel
Between bedrooms. Services run along the wall between two rooms and pass through it. Where they do, the wall is cut.
Above the corridor. The ceiling void usually carries every cable and pipe in the building, and it crosses a wall at each bedroom.
In bathrooms. Waste pipes pass through the floor between storeys. Each needs a collar or a wrap.
At the top of walls. A wall stops at a false ceiling, and the void above is open over several rooms.
How we work in an open hotel
We agree a list of rooms. A few are taken out of use at a time.
Most of the work is above the ceiling or behind a panel, so guests next door are not affected much. Dust and noise are the issue. We plan around them.
We photograph each seal and keep the record by room number, so you can show the assessor what has been done.

Who regulates it
Colnbrook is in Slough, so the local authority is Slough Borough Council. The fire and rescue service is Royal Berkshire.
Related
If the walls themselves are in doubt, a compartmentation survey comes first. If it is just pipes, see collars and wraps.
Questions we get asked
Can you do night work?
Ask us. It depends on the noise and on where the work is.
What if we find something big?
We tell you before doing anything outside the agreed list.
Send it over with the postcode. We will tell you what the work involves and roughly what it costs.
Get a price