Not quite.
For many years the clock on Tom Tower at Christ Church, Oxford, was fitted with two minute hands, one for local time and one for GMT. However, although the clock now only displays standard time, "Oxford Time" is still observed for the traditional 101 rings of Christ Church College's famous bell, Great Tom, every evening at 9pm (9.05pm GMT). This dates from the foundation of the college when the bell rang once for each of the college's original 101 students, in order to tell them to return to the college before the gates were locked.