Integrity, honesty and great communication :-)
We dealt with Nick in the course of making two offers - we were unsuccessful for one and successful in the other. Throughout both we were particularly pleased with the extent of communication - it was regular, and very straightforward, no blather and we were clear at all stages about what was happening now and what the next steps would be. Most of all, he listened to what was important to us. We felt we could trust Nick, and that he had integrity, and the skills to broker a deal that felt like a win-win for both the vendors and us as purchasers. He also had a good and realistic appreciation of market conditions and didn't treat us like dummies. We would thoroughly recommend Nick to other people.