English and Welsh courts do not 'award custody' - they make child arrangement orders based on the child's welfare (Children Act 1989 s.1). Shared 50/50 arrangements are refused for evidence-based reasons, not bias: safeguarding, continuity, practicality and the child's own needs drive outcomes.
Children Act 1989 s.1(3): the child's wishes and feelings (by age and understanding); physical, emotional and educational needs; the likely effect of any change; age, sex, background and characteristics; any harm suffered or at risk; and each parent's capability of meeting the child's needs.
Read that list honestly against your own facts: a dad seeking 50/50 with evidence of school runs, medical appointments and stable housing addresses 'capability'; one proposing shared care from a bedsit 200 miles away will lose on practicality, not bias.
Document existing caregiving (diary of school runs, activities, bedtimes). Show flexibility (offers, not demands, in writing). Address the hard questions proactively: schooling logistics, handover points, holidays. Propose a review point. Courts approve workable plans - they refuse slogans.
Same reasons as any parent: safeguarding concerns (substance misuse, violence, neglect), inability to meet the child's basic needs, or sustained unavailability. Courts assess each parent individually - there is no default maternal preference in law, though historic care patterns often influence interim arrangements.
Communication breakdowns, different household rules, new partners, and schedule friction. Courts order shared arrangements expecting parents to manage these - what defeats 50/50 proposals is evidence that cooperation has already collapsed (police callouts, blocked contact, parallel-school messaging wars).
Common evidence-based reasons: limited prior caregiving history (courts preserve the child's established care pattern), work patterns incompatible with school runs, distance between homes, sibling units, safeguarding allegations under investigation, or the child's own stated wishes (weight rises with age). None of these are about gender - they are about the welfare checklist.
Parents who litigate adult grievances instead of child arrangements, ignore court directions, arrive with unorganised bundles, or refuse reasonable proposals wholesale. Judges reward specific, child-focused, flexible proposals.
There is no fixed order - Cafcass safeguards-check both parents and speak to the child (age-appropriately) as their task requires. Their section 7 report focuses on the child's welfare, not interview sequence.
The C100 fee (currently £232 in England and Wales; check current rates) plus preparation. Self-represented parents pay the fee and their own time; represented parents face solicitor costs in the thousands.