A visit to Coatbridge Baths, Lanarkshire, to see the first part of this two-day event.
With the Olympic Games only a few months ahead, this international will give the selectors a further opportunity to study form for their choice of swimmers who will travel to Melbourne, and both countries are likely to be represented by as strong a team as each can muster.
Another broadcast from Coatbridge: tomorrow at 2.45 p.m.