We present a database of representative left and right ventricular meshes constructed from patient-specific models based on a large cohort of ~55k participants from UK Biobank. It comprises 1423 representative tetrahedral finite element meshes across sex (male, female), body mass index (range: 16 - 42 kg/m²) and age (range: 49 - 80 years). For each mesh, it also includes: a realistic biventricular myocardial fibre structure a morphological coordinate system which describes the positions within ventricles based on (1) the apical-basal (Z), (2) transmural (ρ) (from endocardium to epicardium), (3) rotational (Φ) (anterior, anteroseptal, inferior, inferolateral, anterolateral) and (4) chamber-wise (left ventricle and right ventricle) coordinates. We also present trained network weights and nnUNet plan and hyperparameter selection files for cine MR segmentation models trained separately for the following views: 2 chamber, 3 chamber, 4 chamber and short axis. These are supplied as a zip of relevant nnUNet files for each view: Dataset101_UKBB_LAX_2Ch.zip, Dataset102_UKBB_LAX_3Ch.zip, Dataset103_UKBB_LAX_4Ch.zip, Dataset100_UKBB_Petersen_SAX.zip.