In Denton the Court of Appeal was of the view that the breach in question (the late service of additional witness statements) was clearly a significant one. (newlawjournal.co.uk)
Arguments could be strengthened and additional witnesses called to shore up the case. (ontariocourts.ca)
The claimant in Denton sought to rely on six additional witness statements which statements were served approximately 1.5 years after the expiry of the original deadline for exchange and a mere one month before the start of trial. (newlawjournal.co.uk)