I was passing Heeley pool at the lane swimming time and took a half hour there. The pool, and lanes, were very quiet which was great. I did a basic interval set covering 900 yards or there about, so not a great deal. I was pleased to see a 'sprint' pace below 2:00min/100yards and having worked it out I think it equate to 2:08min/100m. That's fine - even allowing for the advantage of a short pool.
I finished with 4 sets of 2 lengths with bilateral breathing. This is gradually feeling more balanced with less collapse of my right leading arm, even if I still don't have my breathing in order yet. The pace for these gentle sets was 2:20min/100m.