The pictures may not be ideal, it's in at Neil's workshop and he confirms there is no frame serial number and no numbers have been removed. Yes the engine numbers are "interesting"
One thing I did not post before is this number which is very neat and on the front of the NS crankcase, we think it's probably an RAF stock in number. I have called a few places and they are going to look into it, long shot be we hope the 56 spaced at the end could be 56 Sqn who are now at RAF Waddington very near me but in 1941 were flying Huricanes out of North Weald.
Number is 398MS8 56