Christmas Opening Hours

  • 21st December – Normal operating hours 0900 - 1700
  • 22nd December – Normal operating hours 0900 - 1700
  • 23rd December – Normal operating hours 0900 - 1700
  • 24th December – Opening hours are 0900 - 1300
  • 25th December – Unit is closed
  • 26th December – Unit is closed
  • 27th December – Unit is closed
  • 28th December – Unit is closed
  • 29th December – Normal operating hours 0900 - 1700
  • 30th December – Normal operating hours 0900 - 1700
  • 31st December – Opening hours are 0900 – 1300
  • 1st January – Unit is closed
  • 2nd January – Unit open as normal for Saturday service 0900-1300
  • 3rd January –  Unit is closed
  • 4th January – Normal operating hours 0900 - 1700

Our success rates

(based on data from 2019)

We hope that the graph below will give you an indication of our most recent success rates for IVF & ICSI. Proportion of IVF and ICSI in 2019 was 51 : 49. We aim to perform your embryo transfer on day 5, when your embryos reach the blastocyst stage in situations when we feel that this will increase your chances. Over 2019, 63.5% of our patients have had blastocyst transfer and the remainder had embryo transfer on day 2 or 3. The clinical pregnancy rates from all are shown in the graph below, they are broken down to different age groups. Our clinical pregnancy rates per egg collection continue to be consistent with national average rates and clinical pregnancy rates per embryo transferred are significantly higher than the national average (32% vs 27%).

Fresh IVF/ICSI 2019 Overall Under 35 35-37 38-39 40-42 43-44
Clinical Pregnancy Rate per Egg Collection 29.2% 36.2% 34.5% 26.4% 13.7% 9%
Clinical Pregnancy Rate per Embryo Transfer 37.9% 51.2% 44.1% 33.3% 16.2% 12%
Clinical Pregnancy Rate per embryo transferred 32.1% 45.4% 39.5% 26.3% 14.8% 8%
Multiple Pregnancy Rate 4.2% 1.9% 3.5% 3.9% 22.2% 0%

We closely monitor outcomes and advise you on the number of embryos to have transferred in order to maximise your chances of a healthy singleton pregnancy. This often results in surplus embryo following your treatment. If these embryos are of a good grade it is recommended that you freeze them for potential use in the future. During the 12 months we have shown data for, more than 51.4% of patients completing IVF / ICSI treatment had spare embryos to freeze. The table below shows the chances of a clinical pregnancy following frozen embryo replacement cycles (FETs).

FETs 2019 Overall Under 35 35-37 38-39 40-42 43-44
Biochemical Pregnancy Rate per FET 46.7% 49.7% 51.9% 44.1% 35.5% 29%
Clinical Pregnancy Rate per FET 34.7% 38.8% 37.5% 32.4% 24.2% 24%
Multiple Rate 4% 4.7% 3.3% 0% 14.3% 4%

Our IUI pregnancy data have continued to be consistent with national average rates. The number of patients undergoing IUI treatment is significantly lower than those undergoing IVF/ICSI so there is no age breakdown.

Partner IUI
Biochemical Pregnancy Rate / IUI (%) 18%
Clinical Pregnancy Rate / IUI (%) 18%
Average Maternal Age 34.6y
Donor IUI
Biochemical Pregnancy Rate / IUI (%) 17.7
Clinical Pregnancy Rate / IUI (%) 17.7
Average Maternal Age 36.2y

In addition to clinical pregnancy rates it remains important to look at patients’ overall chance of taking home a baby. This latest data is available on the HFEA’s website showing our outcomes to be largely consistent with the national average. Also, it is important to point out that using the type of information presented here to make comparisons between centres and choosing where to seek treatment is of limited value. Each patient has individual and sometimes very different requirements and reasons for seeking fertility treatment.

Please do not hesitate to contact us should you require more detailed information about your individual chances of success at King’s Fertility.

If you would like to see more of our data which have been verified by the Human Fertilisation and Embryology Authority then please visit the ‘Choose a Fertility Clinic’ section of HFEA’s website at You can find our clinic data by searching on our name (King’s Fertility), or clinic reference number (0109).