The gap between what private fertility care offers and what it claims to offer is worth knowing before you spend money. Some of what private adds is real and useful. Some is speed that comes at a genuine cost. And some of what gets sold as enhanced care doesn't have an evidence base.
What private genuinely adds is primarily speed and specialist access. NHS waiting times from referral to first appointment run from several months to over a year depending on your ICB; private clinics typically offer a first appointment within two to four weeks. For someone who is 37 and has been waiting eight months for an NHS appointment, that gap is not trivial.
Private also gives you more choice over consultant, more appointment flexibility, and access to investigations or add-ons that NHS pathways don't fund, some of which are worth having.
What private does not add is meaningfully better clinical outcomes for standard cases. Live-birth rates at equivalent age bands are not significantly different between NHS and private clinics when you're comparing like with like. The HFEA (Human Fertilisation and Embryology Authority) publishes success rates for every licensed UK clinic, NHS and private, and they're worth looking at before choosing.
The number to look at is live-birth rate per cycle started, for your age band. Not clinical pregnancy rate, not per egg collection, not 'our success rate'. Those other numbers are uniformly more favourable and uniformly less meaningful.
The add-ons problem is real. HFEA rates add-ons A through E on evidence strength. Time-lapse imaging, ERA (endometrial receptivity array), assisted hatching, PICSI, most carry an evidence rating of C or lower for the general IVF population, meaning HFEA doesn't recommend them as routine. That doesn't mean they're useless in every case, but it does mean the default should be to ask what evidence rating HFEA gives for your specific situation before agreeing to pay for one.
PGT-A (pre-implantation genetic testing for aneuploidies) has clearer evidence for specific groups, recurrent miscarriage, repeated implantation failure, advanced maternal age, but is overused as a general add-on.
Financing models in private fertility care create incentives worth being aware of. Packages that price 'unlimited cycles' or 'money-back' options favour the clinic statistically. Itemised bills at a good private clinic should be readable: look for what each line costs and ask which is clinically indicated versus optional.
A clinic that can't or won't provide an itemised breakdown before you commit is a useful signal.
How to evaluate a private clinic
Start with HFEA's Choose a Fertility Clinic tool, it lets you filter by your age band and compare live-birth rates. Check recent data (last two years) because outcomes change as clinics change. Ask for an itemised quote before committing and identify which items are recommended versus optional. For any add-on, ask: 'What's the HFEA evidence rating for this for someone in my specific situation?'
If they can't tell you, or say 'it couldn't hurt', that's your answer. Ask who your named consultant is and whether that person will be present at egg collection, this varies more than it should.
For clinics that offer outcome guarantees or money-back packages, read the small print on what counts as an eligible cycle before deciding the headline looks attractive.