Welcome!
If you are not already a member, I would strongly advise you to join the Series One Club itself. Minimal cost and gives you access to a whole heap of useful support and information.
Word of advice on imports... You will obviously need a NOVA certificate (HMRC Notification of Vehicle Arrival) and will need to jump through a lot of hoops to get it registered. If you have not done so already, you must discuss the process with the Club's Vehicle Registration Officer before entering into any discussions with DVLA. It will save you a whole heap of pain. Also, once you have the vehicle here in the UK, do not do anything to it until it is registered. If DVLA want it inspected, it must be a complete vehicle as imported.
Do you have the registration documents from its country of origin? I won't start a long discussion on here, but get the guidance from our VRO before doing anything!