The variation in waiting times from being referred by a GP to receiving fertility treatment has been documented from 650 NHS fertility clinics across London. Average wait times range from 25 to 54 weeks - which is a 29-week gap if you live in Twickenham compared to Enfield. See the Evening Standard for more details...
Waiting times for NHS fertility services are inconsistent across London's boroughs
Image by Alan Handyside via the Wellcome Collection. Depicts a human egg soon after fertilisation, with the two parental pronuclei clearly visible.