Keir, I'm following Don Fink's Intermediate plan as recommended by Cheerful Dave (thanks Minni for the contact!). The base period ranges from 6 to about 12 hrs per week. Gets more later! At the moment it's a couple of 1hr swim sessions per week (today's was 300m warn up, 8x50m drills, 4x125m off 20s, 4x175m off 30s, 4x125m off 20s, 8x50m drills, 200m cool down) 2 shorter bike sessions 30-60min each (one of which done as a brick) and one longer ride (1hr45 last week) plus 3 runs of an hour or so. At this stage pretty much everything is done in HR zone 2 so fairly steady going.
Superb totals seem to have been racked up by all through the year! I am unfortunately too embarrassed to work mine out.
Year review
Good mileage start in jan feb, HM PB of 1:22:57, injured throughout march, Mara PB in April 3:12:48, 5K PB in June 18;27. 1st vet in offroad HM in July (1st ever prize

) 1st Triathlon completed in September, injured in October, November, December
Goals for 13 - to go long and hard and hope nothing breaks
Happy New Year to all of you, you are all heroes