Worth noting that CTCSS can simply be ignored - as in not used. CTCSS is there to prevent radios bursting into life with messages NOT for the recipient, but if you have a scanner, you usually want to hear everything. If you have two users on the same frequency, then you can use it to block one - if they are annoying, but for nosey people, CTCSS can be safely ignored. The hams use it simply to stop their repeaters bursting into life from users in different parts of the country, or even to stop them opening the people in Holland transmit, as used to happen here in Lowestoft on the coast. Our local repeater, very underused would suddenly be on permanently when a lift popped up and loads of people from Hilversum started to talk to each other through it. Fun for ten minutes, then very annoying!
Leicester repeater group have quite a few repeaters - CF, the VHF one is dual mode, but not reliable on digital yet - so a good example where CTCSS could be useful to stop the horrible digital biz when people try to use that mode. Ordinary FM is by far it's most common mode of operation - so easily hearable on 145.6MHz
Their others in the area are:
LE - UHF 433.1MHZ
UM 50.74MHz (probably not much use at all)
You can't use their TV repeater on 1.3GHz, or the beacons higher up in the microwave band.
Have a look at their web site http://www.leicestershirerepeatergroup.org.uk