There is a view that #multifactor #productivity in the #uk is actually quite high by international standards - and that the real problem is one of factor proportions - too little #capital as against #labour in particular. To which the answer would be either to attract in #capital or for the #uk to find the #capital itself. One form of #endogenousgrowththeory suggests that the latter strategy would work well. Interpreting fiscal rules to enable it would make sense!