Duchess Driver,
I diverted in there because of proper 'orrible weather at my planned destination last summer. I needed to clear customs prior to heading on to my non-customs convenient alternate (where I made an indemnity landing out of hours). 10 mins on the ground and passports photocopied at BFC cost me £200. I understand the £200 was an out-of-hours handling fee (not landing).
They were perfectly charming but I won't be going back there again in a hurry unless (as on this occasion) I have absolutely no choice.
SB