Unimog Club UK

Thanks for all the positive comments, I'm after a bit of advice now.
I'm looking at registering the MOG with DVLA as an agricultural tractor.
does anyone know the process and what i need to find out before i start the process.
The tyres are available as Michelin XM47 (rated 136G), there's a cheaper tyre available, a BKT Multimax MP513 (same speed rating). Anyone heard of BKT tyres?

James