At Clara Bee we would be very happy to meet with your clients when they are back and settled in the area. If they or you would like to see examples of our project work then please look at our website http://www.clarabee.com/.
In addition the NVN Design & Build Guide has a Source Book of Top Suppliers - see link above. It's important to get the right relationship "click" on these projects and also to be able to cover the anticipated works with access to the right contractors. All difficult to predict in advance and without a home bought!
If we can help nearer the time then please get in touch using email email@example.com
or give us a call on 020 8675 1477.