The Law Society Gazette has reported that the new electronic bill, previously scheduled for mandatory use from October 2017, is to be put back until April 2018. The reason given for this delay is that more time is needed to ensure the IT in county courts is in place to handle bills filed electronically.
I doubt it is just the county courts that need more time. With time running out for the current voluntary pilot scheme (Practice Direction 51L) it seems a decision has been taken not to extend this, as to do so would be futile due to a lack of volunteers.
Either the ‘volunteers’ are not ready for the electronic bill or they simply do not want it.