Great Britain's Kerenza Bryson, Sarah Collin, Myles Pillage, Jamie Harper and George Budden are all set to make their International Modern Pentathlon Union (UIPM) Junior World Championship debuts in the Hungarian city of Székesfehérvár.
Action is due to begin tomorrow and conclude on August 14.
Bryson made her World Cup debut in Cairo in February, qualifying for the final and finishing in an impressive 26th position.
The event will be her first major championships at junior level, in her first year in the age category.
Collin made her major international debut at the Junior European Championships in Barcelona last month, competing in the individual competition and mixed relay.
The women’s team will be completed by Charlie Follett and Georgina Summers, who both competed at the 2016 Junior World Championships in Cairo.
In the men's squad, 19-year-old Pillage has enjoyed a successful season on the senior circuit, appearing in three World Cup relays, as well as the men’s relay and mixed relay at the senior European Championships.
Harper and Budden will also be making their Junior World Championship debuts.
Budden made his full international debut at the German Open Championships in April before going on to claim victory at the British Junior Modern Pentathlon Championships.
The British men’s team in Szekesfehervar, which hosted the 2014 European Senior Championships, will be completed by Bradley Sutton.
Action is due to begin tomorrow with the women's relay before the men's alternative takes place on Wednesday (August 9).
Qualifying for the women's and men's individual events takes is scheduled to take place on Thursday and Friday (August 10 and 11) respectively.
Solo finals are then pencilled in for Saturday (August 12) for the women's event and Sunday (August 13) for the men's.
The Championships will then conclude on August 14 with the mixed relay final.