Regional Costs Judge Marshall Phillips writing in the Solicitors Journal:
“In cases issued on or after 1 April 2013, the receiving party should differentiate between work done before and after that date, proving a total for work done before and a total for work done after. The court will be applying a different proportionality test for work done during these two periods”.
For many cases, this is no doubt a sensible suggestion, but it is not required by the rules.
Secondly, so far as the courts “applying a differently proportionality test for work done during these two periods”, not necessarily. See: proportionality transitional provisions.