Starcross has identical port holes on the front bulkhead, which you can't see from the photo above as they are hidden under the cratch cover.
Ruby Ann is currently for sale at Norbury Wharf and was recently repainted in a very similar style to Starcross.And then there's Hebe II - not the prettiest of Ken's boats perhaps but no doubt someone's pride and joy. It's also for sale here.
Many of the boats on the list have names they share with other boats and the only other one I've been able to positively identify as an Aldridge boat is Pallas Athene Also for sale, here
Starcross has a builder's plate that carries serial number "3" and I've often wondered how accurate that is. From the registration numbers Jim Shead quotes its sixth in line with 31209 "Moments" the lowest compared to Starcross' 50504. However, "Johno" and "Jasper" appear to share number 49356 and "Blue Moon" and "Lisa Marie" are both listed as 49867.