Hi wc2050,
Thanks for that.
It hasn't actually expired yet (due 9th April), so it looks from your post its fine. Just thought it was risky to renew on the day it expires? i.e. if something goes wrong, etc. and making sure we have seamless nameserver coverage.
Of course trying to explain all this to the boss who keeps getting warning e-mails from the previous registrar isn't fun either.