The structure of German federalism involves recognised coordination mechanisms such as MPKs (conference of Minister-presidents) and similar committees in various ministerial levels that meet four times a year. There is none of this chaotic British ad-hocism that adds layers of BS and confusion

Similarly, in the US mostly coordination on specific issues when needs arise and otherwise they try not to interfere in each other's business (as constitutionally determined) Not possible in the UK because in the UK constitution everything ultimately depends on the will of parliament.