England Women lost their first game of the tournament at the hands of Ireland but ended their campaign on a high with victory over hosts Wales.
After the U16s travelled to Dublin, the U18s face Ireland, Scotland and hosts Wales in Cardiff as the England Men ensured a clean sweep and the Women earned a 2-1 record.
Lauren Milligan and Adam Davies were the respective head coaches of the women and men and the matches were an opportunity for players to stake their claims for selection for the Great Britain teams, though other English players not selected for these tournaments will also be in the running when those squads are chosen.
Results, recaps and photographs are published below.
England made a strong start to their Four Nations campaign with a big win over hosts Wales.
Sebastian Emenalo and captain Nedas Cholevinskas top-scored with 17 points each as England dominated from the off.
A fast start sent coach Davies' side in at half-time with a 63-26 lead and a strong final quarter (27-11) ensured England began the tournament with a century-points win.
England also opened the Four Nations with a win with a big victory of their own against Scotland.
Liv Forster starred for coach Milligan's side with 26 points, while teammate Felicia Jacobs-Abiola (10pts) also hit double figures.
England will now face Ireland and Wales tomorrow as they look to build on their positive start.
England survived a second-half onslaught from Ireland to make it two wins from two in Cardiff.
Emenalo provided 16 points from the bench while Cholevinskas (12pts) and Matthew Goodwin (10pts) continued their strong start to the tournament.
A blistering start saw England take a huge 52-14 lead into half-time and despite a resurgent Ireland taking a 26-4 third quarter, England held on.
Scotland U18 Men 36-76 England U18 Men
England Men finished their Four Nations campaign unbeaten with a comfortable win over Scotland.
Goodwin (14pts), Emenalo (11pts) and Cholevinskas (11pts) were the front runners once again as Coach Davies' side leave Cardiff with a perfect record.
Ireland U18 Women 60-52 England U18 Women
Ireland edged a tight contest with England as they suffered their first defeat in Cardiff.
England were led by Katie Cox (11 pts, 11 reb) and were narrowly in front going into half-time.
But an Inspired Caitlin Glockner (24 pts) and Ireland, roared on by the travelling support enjoyed a 29-14 final quarter to take the win.
England ended the Four Nations with a win over hosts Wales.
Felicia Jacobs-Abiola impressed with a 16-point, 13-rebound double-double, alongside teammates Leia Edwards (12pts,12reb) and Cox (18 pts).
Katie Cox, Sevenoaks Suns
Leia Edwards, Sierra Canyon
Olivia Forster, Ipswich Basketball Club
Louisa Gibbins, Ipswich Basketball Club
Alexandra Hernandez, Manchester Mystics
Felicia Jacobs-Abiola, Southwark Pride Basketball Club
Jacqueline Osei-Kwame, Oaklands College Wolves
Alina Riley, Nottingham Wildcats Basketball Club
Grace Strickland, London Lions Basketball Club
Violet Stutz, Southwark Pride Basketball Club
Amba Thompson, Sevenoak Suns
Yemisi Mefful, Nottingham Wildcats Basketball Club
Head Coach: Lauren Milligan
Assistant Coach: Siobhan Prior
Team Manager: Paula Charity
Physio: Kirsten Wing
S&C Coach: David Baron
Myers Amoo-Gottfried, Bracknell Cobras Basketball Club
Liam Campbell, London Elite
Nedas Cholevinskas, London Lions Basketball Club
Bendeguz Csernak, Southwark Pride Basketball Club
Sebastian Emenalo, Thames Valley Cavaliers Basketball Club
Matthew Goodwin, Manchester Magic
Daniel Nwauzu, Myerscough College Basketball Club
Timothy Oboh, Kent Crusaders Basketball Club
Emmanuel Adeniyi, Southwark Pride Basketball Club
Edward Onyia, Leicester and Loughborough Riders Basketball Club
Tyreese Perry-Huggins, Ipswich Basketball Club
Lewis Smith, Myerscough College Basketball Club
Head Coach: Adam Davies
Assistant Coach: Michael Bernard
Team Manager: Liam Jefferson
Physio: Bob Bramah
S&C Coach: Josh Young