Direct comparisons to last year's World Champs are problematic because British Swimming had to change their selection policy halfway through the meet, but they did that to get to their 30 team limit so it is a good starting point to highlight the challenges we may have with the team size this year.
GB sent a team of 29 swimmers to Fukuoka -
Men's Squad (17):
Lewis Burras - 50m Free / 100m Free
Ben Proud - 50m Free
Matt Richards - 100m Free / 200m Free
Tom Dean - 200m Free / 200m IM
Luke Turley - 400m Free / 800m Free
Daniel Jervis - 800m Free / 1500m Free
Cameron Brooker - 100m Backstroke
Oliver Morgan - 100m Backstroke / 200m Backstroke
Brodie Williams - 200m Backstroke
James Wilby - 100m Breaststroke
Greg Butler - 200m Breaststroke
Jacob Peters - 100m Butterfly
James Guy - 100m Butterfly
Duncan Scott - 200m IM
Joe Litchfield - Relay Cover
Jacob Whittle - Relay Cover
Jack McMillan - Relay Cover
Luke Turley didn't make the 400m time and probably won't do it in the 800 either. I think Cameron Brooker and Brodie Williams will fail to get into the top 2 of their events so can also be removed. That creates an adjusted squad size of 14.
We definitely need to add in Adam Peaty and probably Luke Greenbank (200m Back), Jonathan Adam (100m Back) and Max Litchfield (400m IM). An argument could be made for taking another freestyle relay cover - probably Edward Mildred, but I'll assume that won't happen. That would take the men's squad to 18.
Women's Squad (12):
Anna Hopkin - 50m Free
Freya Anderson - 200m Free
Abbie Wood - 200m Free
Freya Colbert - 400m Free / 400m IM
Lauren Cox - 100m Backstroke
Medi Harris - 100m Backstroke
Katie Shanahan - 200m Backstroke / 200m IM / 400m IM
Kara Hanlon - 100m Breaststroke / 200m Breaststroke
Keanna MacInnes - 100m Butterfly
Laura Stephens - 200m Butterfly
Emily Large - 200m Butterfly
Lucy Hope - 4x200m Relay
Emily Large didn't get the standard in the 200m Butterfly and probably won't get it in the 100m so can be removed from the list. I am going to take out Anderson on the basis that she is sick and won't perform this week. I also think Medi Harris will be pushed close in the 100m Back by Kathleen Dawson but for now, I will leave Harris in as an individual and have an adjusted team size of 10.
I think Angharad Evans will get the standard (100m Breast) and will need to be added, as will Honey Osrin (200m Back) and Amelie Blocksidge (1500m Free). That would take the adjusted team size up to 31 but it would leave the women's team dangerously underweight on freestyle relay cover so I think they would have to add in an additional 200m Free - Leah Schlosshan - and an additional 100m Free swimmer to give a women's team of 15.
That's us up to 33 making it difficult to include Kieran Bird. They could give dispensation for Anderson (and I hope they do) but I'm not sure that would fully negate the need for the additional relay cover as I'm not sure they would want to use her in both heats and finals of the relays.