A CBT certificate will allow you (with L plates) to ride:

At 16 up to a 50cc moped. At 17 up to a 125cc machine. At 19 or over practice on a larger machine and take your A or A2 licence.

You must pass a motorcycle theory test prior to all practical tests other than CBT.

What you can ride having completed your CBT and Theory test
Age 16 AM-MopedAge 17 or over A1 Licence19 or over A2 Licence24 or over A Licence
Take Mod 1
Take Mod 2
Take Mod 1 125cc
Take Mod 2 125cc
Take Mod 1 M/c of 35kw (47bhp)
Take Mod 2 M/c of 35kw (47bhp)
Take Mod 1 M/c 595cc 40kw
Take Mod 2 M/c 595cc 40kw
AM Moped licenceA1 LicenceA2 LicenceA Licence
You can now ride a moped restricted to 28mph No L plates-Passengers allowed Motorway restrictions applyYou can now ride a 125cc machine No L plates- Passengers allowedYou can now ride any bike up to 35kw (47bhp) No L plates-Passengers allowedYou can now ride any machine of your choice. No L plates-Passengers allowed  
Your options now…
Keep riding a moped
At 17 or over take a motorcycle test
Your options now…
Keep riding a 125cc machine
At 19 or over you can now take the A2 test and ride a bike of 35kw (47bhp)
Your options now…
Keep riding a m/c of up to 47bhp
After two years or on reaching 24 years take a full cat A licence
 

Age restrictions

From 19 January 2013 new age restrictions came into force on the category of motorcycle you can use.

The table below shows what sub-category you’ll need to use for module 2 if you’ve already passed module 1 before 19 January 2013.

Your age from 19 January 2013Sub-category used for module 1 before 19 January 2013Sub-category used for module 2 after 19 January 2013
16 or overPAM
17 or overA1A1
17 or overA2A1
23 or underAA2
24 or overAA