I emailed him first off, but he was away on holiday, when he returned he emailed me to advise what was needed and what the max weight limit my vehicle was capable off and how much it would be. I sent him copies of the information he required and rung him up to make sure he had received it and to ask how I pay him, the next day I received an invoice by royal mail, I paid it electronically through my bank and within three days recieved the engineers letter of calculations, the Vin sticker to show the new weights on the vehicle and a laminated copy to keep in the habitation area.
When I spoke to him on the phone I explained I needed a fast turn around as I was going away to Spain in a few weeks until Xmas and wanted to get my V5 sent off before I go, in the hope that it is back before January when I hope to set of to Europe for a few months. He explained he had been away on holiday and was extremely busy as he Upolstery wagons, but told me not to worry as it would be sorted out within a week and it was. Perhaps give him a call to see what is happening. I have now filled in my V5 and sent it off along with his letter, been told DVLA can take up to 4 weeks. I took photos of the stuff he sent me, but not sure how to attach it on here, otherwise I would.