It's a very good guess. I can't even make a guess.
I'd have to look outside, but I think I have a few with that light warmish pink. Maybe. It's usually always hard to make an identification from photos since we can't be sure how our computer screens are representing the colors. To me, the sepals and the foliage are going to be the thing that separates this unknown rose from others with similar blooms since they seem more distinctive to me than the bloom itself. Maybe it's because I hung around with other OGR nuts, but I was taught to look very much at sepals and leaves. And thorns, peduncles and stuff other than the bloom. There was a lovely long online discussion about the real Banshee, way back in the day, that was primarily focused on the sepals and leaves. Lot's of swapping of photographs. It was fun!
I've got Leander, and agree that it really isn't a candidate based on the flower form. I have multiple warmish pink English roses, but all have blooms that are too full.
Note to self - take more photos of buds showing sepals. And thorns. Thorns can be a good part of IDing some roses, especially OGRs.
