Equasis shows her as STEPHANIE (SLE) since 010412. Owners are listed as Lagos-based since 260412. There is no evidence of activity on the quoted MMSI number.
I have received two replies from Humber VTS/ABP that confirm that GROVEDALE H. sailed from Alex Dock on 070712 for Gillingham in tow of the small tug CHRISTINE (MQPQ6).
GROVEDALE H. remains laid-up (if that is the right term) on the River Swale. Looks unlikely to be going anywhere soon. Seen on yesterday's Thames Ship Society cruise.