Should I wait until kitchen refit to upgrade fuse board?

It's really up to you, there are pro's and con's of installing a new consumer unit now or later. If the existing unit is in a kitchen cupboard which is being removed, then it maybe worth waiting until the kitchen is re-fitted as it may make access easier, plus if you redesign needs it, the board could be moved slightly to facilitate your new layout? Changing it now would increase safety as the new unit will have RCD protection, the downside is that if there are any faults on your wiring the RCD could trip out. Similarly the new unit could get damaged during the refit. Personally I would advise getting an Electrical Installation Condition Report carried out now to assess the overall condition of the wiring and to see if there are any defects present. If there are then these could be incorporated into the unit upgrade and kitchen refurbishment works. Please see link to best practice guide on consumer unit changes below: http://www.esc.org.uk/fileadmin/user_upload/documents/industry/best_practice/BPG6_09.pdf

Hi you can have your consumer unit upgraded before kitchen work is done this will give you an idea of the condition of existing circuits. Kind regards Kevin

Would recommend upgrading consumer unit prior to kitchen alterations as this would identify any issues that may already exist and reduce future problems Regards Austin

I would suggest not fitting a dual rcd board as these aren't that good, when they trip everything goes off. An rcbo board is better as only the circuit affected will trip leaving the rest working. You could also move the board so when kitchen is done, it won't be in the way.