HMRC report that last Self Assessment season 78% of all returns were filed online (just under 7m). The busiest day was January 31st with 572,455 returns filed and on the busiest hour that day (from 4 to 5pm) just under 50k returns were submitted.
This year they are keen to bring to our attention important new changes to the penalty regime for late returns and late payments that recently came into effect. There will be a significant initial £100 fixed penalty for a late return which will now apply even if there is no tax to pay or if the tax due is paid on time!
Look out also for two forthcoming publications due soon from HMRC: