Thanks Fiat. Knowing the extent of the change on 31/01/2023 will determine the route we have to take. If we can use bridging software to file VAT returns and the software lets up limp on for say a year beyond 2013 then QBO may then be a viable option, right now it is not. There is not enough time provided by Intuit to suitably support all clients to migrate to a new system. Thank you for your comment re using the US version. I'd be nervous of recommend that to my clients though as can imagine compatibility issues etc. 

Look forward to getting a reply from Inuit.