The Vimy was built under the FAA’s Experimental Airplane regulations, and remains on the FAA Experimental register for which there is no UK equivalent. To transfer it to the UK civil aircraft register with a UK Permit to Fly would be an expensive and time-consuming process which a small charity of limited resources such as the Museum could not justify on its own. The costs of that transfer and the significant operating costs of the biggest biplane flying in the world could not be recovered through the limited payments available on the UK Airshow circuit;
I was just reading about the reasons they stopped flying the replica Vickers Vimy, and they are quoted above from the Brooklands museum site. Doesn't this apply to the Hp42 project, and so is there any point in building this aircraft ?