The nacelles for the Beryl look to be about the same length as a Meteor Mk.4/8 nacelles only the Beryl nacelles are quite a bit bigger in diameter, the wing does not attach on the center line though, they attach further to the top and as I attempted to say previously, the top profile line of the two nacelles are at about the same level. Although this means the nacelle hangs lower, it's not like how the Metro-Vick powered F9/40 had them, and it appears that standard u/c was used judging by where the wheel axle is to the lower edge of the u/c bay door.
Re-reading the Aerofax book (Gloster Meteor) it says the nacelles inner structure was made big enough for other engines to be installed and if you were to look at pics of the Avon and Sapphire powered prototypes you can see the nacelle looks very similar. The differences being the air inlet and exhaust nozzles are just bigger in diameter.
Here's a pic of an F9/40 which was used for nacelle shape experiments, I'm building this from some photos that appeared in an Air-britain article (I think -- it could have been another book -- it's been a while since I started this Meteor prototype project)