In this section is given the procedure that British Waterways must follow if they wish to take away your licence (“withdrawing their consent”) – see section 17 (5) below
The important bit is that they must give you 28 days to “remedy the breach”
British Waterways Act 1995 Section 17
(4) If—
(a) (subject to subsection (6) below) the vessel does not comply with the standards applicable to the vessel on the date when the consent was granted; or
(b) an insurance policy is not in force in respect of the vessel; or
(c) either—
(i) (in the case of a vessel in respect of which a relevant consent is issued pursuant to subsection (3) (c) (i) above) it appears to the Board that a mooring or other place such as is referred to in subsection (3) (c) (i) above is not available for the vessel; or
(ii) (in the case of a vessel in respect of which a relevant consent is issued pursuant to subsection (3) (c) (ii) above) the vessel has not in fact been used bona fide for navigation in accordance with the said subsection (3) (c) (ii);
the Board may give notice requiring the holder of the relevant consent to remedy the default within such time as may be reasonable (not being less than 28 days).
(5) If the holder of the relevant consent does not comply with any notice served pursuant to subsection (4) above then the relevant consent shall determine on the date the notice expires.