Nothing short of astonishing this ; both parents are successional flowering , not true multiflorals , in fact I can;t think of a Phrag which is. As an English grower you will be a member of the British Paph Society, or if not you should be . Take this along to a meeting and show it, and you will sweep the board. You will also surely (?) know the Eric Young Foundation displays, at London etc ; I am one of many who have marvelled at the Phrags they show - how do they keep so many flowers on the spike we ask each other ? The best answers so far have been superglue ( joke) since for all the rest of us, a plant which eventually has 10 or more flowers on a spike never has more than 3 or 4 out at once, but I have never seen EYF show a spike like his.

BTW it seems that the RHS Register treats delassandroi as a mere variety, not a ssp of P bessea. So the cross is named Phrag Eric Young. This has been heavily awarded in USA - perhaps in UK too - but Orchidwiz is best on US (AOS) awards. 37 awarded plants are listed, and the average has 3.5 flowers and buds per inflorescence - which makes your plant all the more remarkable - although incidentally the flowers are not typical of Eric Young - the nearest is the one shown on the Isles of Jersey 17p postage stamp, but yours has a much better colour. If it's still going, and you get a chance, put it up to the RHS orchid committee - it should do very well indeed.
Well done indeed - can you/will you, tell us how you do it ?