Another (shorter!) thread on aspects of English legal cases. This one is on service of documents, as described in CPR 6 (https://www.justice.gov.uk/courts/procedure-rules/civil/rules/part06). There's going to be a bunch of paperwork that needs to be available to everyone involved in the case. The default is for that paperwork to be delivered in physical form, but if the recipient agrees then it's acceptable to do it via electronic means instead.
PART 6 – SERVICE OF DOCUMENTS – Civil Procedure Rules – Justice UK

One consequence of this is that if you refuse to agree to service via email, you're going to end up with piles of paper being delivered to you. If you insist on being served physical objects, you'll get physical objects!
@mjg59 how does physical delivery work with embargoed/escrowed witness statements that you mentioned before?
@lenary In theory you arrange a time to do the exchange and ensure everything arrives simultaneously