I reckon that if the MCA get involved in any way at all you will need to have a liferaft with 100% back up, so that will be 2 - with grab bags.
Flares, a main and a kedge anchor, sound signal, a barometer
2 spare lifejackets, a litre of water, DSC vhf, liferings - the whole lot, as per the 'new' harmonised code
Then they will have to come and survey it, as it is a new build, so that will be 3 people, so approx £270 per hour all in, they will be there all day, then they will run out of time so you will have to pay their accom for the night.
Then prob that will work out just as well that they stayed because they will have forgotten to look at something, they will look at it and sting you for another hour or two, then say it was cheaper than getting them out from the office again ---- then will travel back to the office, you will not hear anything for approx 4 months, and they will then say No you will never be able to code it.
and thats just your Zorb's