Tingle, every circuit should have been electrically tested before connection to the new consumer unit. The values for continuity, insulation resistance, loop impedance and RCD operating parameters should be recorded on the schedule of tests, along with details of your supply and earthing/bonding characteristics. All this work can take the best part of a day to do properly on the average house - at some point every appliance should have been isolated and all lamps removed from light fittings. The consumer unit should be fully labelled, circuit by circuit and be labelled (as mentioned before) with advice about testing RCD's and the date of last and next recommended test. Ideally you should also be supplied with a full schedule of your circuits to be kept by the consumer unit.
It is a requirement of BS7671 that an electrical installation certificate be issued for such work and that you, as the person ordering the work, are given the top copy. Many reliable, safe, fully qualified electricians are unaware that this is the case. Many believe that they only have to issue certificates on request. Some have never issued a certificate in their lives.
But, if your guy is NICEIC approved then there is no excuse and he should be fully aware of these requirements. Also, if he really is approved, you can ask the NICEIC to intervene if you get no satisfaction.