England girls started strongly against Lithuania in the 5th-6th place game, but the Baltic team chipped away and won out 38-44.
Ophelia Larder-Lee and Precious Godwin top scored with eight points each, with Summer Wilson adding seven.
The boys needed to beat Croatia to earn themselves bronze, but even 15 points from Myles Barry and 10 from big man Ziah Francis couldn't stop the Croats, who had the dagger at the death, winning out 45-56.
Both England teams can be proud of themselves, showcasing their talent against some of Europe's best.
The group stage finished with England boys and girls edged out by their Italian counterparts.
Head coach Scott's boys lost 25-56, with Myles Barry and Oliver Bishop top scoring with five points a piece.
The girls, led by Gem Salmon, battled hard but it wasn't to be, finishing 48-32. Neve Rugette added nine to her tournament points tally.
The Jr. NBA selected Myles Barry, Oliver Bishop, Anya Williams and Neve Rugette, and coach Salmon for the All-Star game.
Barry and Williams were coached by Atlanta Hawks Hall of Famer Dominique Wilkins, whilst Bishop and Rugette had multi-WNBA champions Ticha Penicheiro and Amaya Valdemoro as their star-coaches - as well as being assisted by Salmon.
Summer Wilson and Maxx Tjongondjoza won the the shooting contest and Rugette and Barry competed in the skills challenge.
The second full day of competition finished with the England boys picking up a victory and a loss, and the England girls picking up valuable international experience from two losses.
Big man Oliver Bishop was on fine form for the boys in their 46-37 win over the Netherlands, grabbing himself 12 points.
However, later in the day England's fortunes turned, as they lost their first game to Spain, 62-28, ending the day with a 3-1 record.
England girls (0-4) also lost to Spain, 72-24, but their better performance came in their earlier game, playing well as a defensive outfit in a 43-25 loss to the Netherlands.
Day one concluded with a pair of wins for England boys and two hard fought losses for England girls.
Head Coach Lewis Scott's boys did the business on the first day of competition, going 2-0 with wins against Lithuania, 74-61 and Croatia, 59-48.
There were also Player of the Game awards to London Thunder's Myles Barry and Milton Keynes Breakers' Samuel Muleba.
England girls did themselves and Head Coach Gem Salmon proud too, growing in confidence from their 47-29 loss to Lithuania at the start of the day to almost topping Balkan rival Croatia, who came through to win, 51-45, in spite of Khyannah Campbell's 12-point effort.
The second edition of the Jr. NBA European Finals presented by Kellogg's was held at the L'Alquería del Basket in Valencia, Spain from the 26-29 June.
The elite youth basketball tournament featured boys and girls aged 15 and under from six European countries – Croatia, Italy, Lithuania, Netherlands, Spain and the UK (England).
The competition format was the same for both boys and girls:
The players also took part in life skills sessions, skill challenges, basketball clinics, a three-point contest, an All-Star game, and community outreach activities.
Salmon and Scott led their England teams against Greek clubs earlier this month.
The tournament was covered by the OWQLO Jr. NBA app.
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Results will be updated here
Times are BST
Girls
10:30 - England 29-47 Lithuania
Anya Williams top scored with seven points.
17:15 - Croatia 51-45 England
Khyannah Campbell and Neve Rugette were England's sharp shooters with 12 and 11 points respectively.
Boys
10:30 - England 74-61 Lithuania
Oliver Bishop had 20 points and Myles Barry scored 16 points and was player of the game.
17:15 - Croatia 48-59 England
Top scorers were Maxx Tjongondjoza (12) and Samuel Muleba (11), who was awarded player of the game.
Girls
08:30 - Netherlands 43-25 England
Neve Rugette top scored for England with 13 points.
15:00 - Spain 72-24 England
Neve Rugette and Chayana Collins-Foster top scored with seven and five points, respectively.
Boys
10:30 - Netherlands 37-46 England
Top scorers were Oliver Bishop (12), Samuel Muleba (11) and Rufus Wilkinson (8).
17:00 - Spain 62-28 England
Ziah Francis put up nine in a tough defeat to Spain.
Girls
11:00 - England 32-48 Italy
Top scorers were Neve Rugette (9) and Khyannah Campbell (6).
Boys
09:00 - England 25-56 Italy
Myles Barry and Oliver Bishop top scored with five points a piece.
16:30 - All-Star game and contests
All-Stars: Myles Barry, Oliver Bishop, Anya Williams and Neve Rugette and Head Coach Gem Salmon
Skills challenge: Myles Barry and Neve Rugette
Shooting challenge: Summer Wilson and Maxx Tjongondjoza
Girls
09:00 - England 38-44 Lithuania (5th/6th place game)
Ophelia Larder-Lee and Precious Godwin top scored with eight points each, with Summer Wilson adding seven
Boys
09:00 - England 45-56 Croatia (bronze medal game)
Myles Barry scored 15 and Ziah Francis racked up 10
13:30 - Awards ceremony
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The aim of the trip was to continue the players’ development as part of the England Talent Programme by exposing them to new challenges and different styles of basketball.
The Jr. NBA is the NBA's global youth basketball program for boys and girls, which teaches the fundamental skills, as well as the core values of the game – teamwork, respect, determination and community – at the grassroots level in an effort to help grow and improve the youth basketball experience for players, coaches and parents.