So, the government "technical notes" for the possibility of a "no deal" Brexit have been released. They certainly do not make pleasant reading for those that believed Brexit could be accomplished with "the easiest negotiations ever concluded" to use the words of David Davis
I believe the section of the briefings that would affect all who reside in the UK would be that which addresses company need to fill out customs declarations for goods entering the UK from the EU. It states, Organizations should think about whether they should, “engage the services of a customs broker, freight forwarder or logistics provider to help. Alternatively, they should secure the appropriate software and authorisations”.
The above would bring to the British Road Haulage Industry a level of bureaucracy not seen since the 1980s when the number of heavy vehicles directly travelling between the UK and Europe was far lower as compared to today.
To use one scenario as an example, all the above paperwork will have to be checked against the seal on the vehicle at the ports. As the time delay at the port for that check would be unknown, any Just in time delivery schedules (JIT) would be unworkable.
In the above, distribution centre "Cross Dock operations" which work in close conjunction with those JIT schedules would also be unworkable and huge amount extra warehouse space would be required to accommodate previous older type handling operations which will bring forward substantial additional costs.
The above is in my view just one of the problems of a "no customs agreement Brexit". There is also the problem of the building the thousands of extra HGV trailers required to carry out the same amount of Haulage as now, along with the additional power units required to haul those trailers. Along with that, there is also the problem of finding all the additional warehousing requirements for the same.
However, between now and Brexit day, there is always the possibility that a customs agreement could be concluded at any point. In that, no Haulage or distribution company will purchase any of the above vehicles or warehousing while that possibility exists. For who would wish to have all that equipment and storage on their hands and no work for it.