I note that in the RIA the CAA quote the total UK financial impact as below £20M, hence this does not require to be presented to the Prime Ministers office for approval.
Mind you, they are also quoting a transponder installed cost of £500 and have made no mention of the installation cost or annual inspection/maintenance charges.
A quick sum shows that at the present cost of £1500 per unit, the cost to recreational aviation alone will be over £10M, excluding fitting and certification costs.
VP