Thanks guys - I gave up in the end and went to Shemtek - got a very good remap at a competitive price with great comms too - definitely recommended:
https://shemtekautomotivesolutions.epageuk.com
If you're looking for a marble floor & plate glass windows, you'll be disappointed - if you want a good remap (or other Volvo work) done by a knowledgeable guy who cares about customers, well worth a try.