London 2012 Olympics

Even looking at this page:
http://www.getaheadofthegames.com/travelinaffectedareas/city/112.html

Absolutely no mention that OLs cannot be used by cyclists.

The only bit that might be relevant is "impact on roads" which links here:
http://www.getaheadofthegames.com/travelinaffectedareas/city/london-road-predicted-impacts.html

But that appears to be general advice for car and motor vehicles rather than any advice to cyclists.

I can only deduce we get this brilliant network of new lanes to use.
Who is / who is not allowed to use the games lanes is defined in the Traffic Regulation Orders, which derive their authority from the London Olympic Games and Paralympic Games Act 2006, and under Section 6 of the Road Traffic Regulation Act 1984

Only "Official vehicles" are permitted to use the lanes

3.
Games Lane, Games Zone and Official Vehicle Only Route Controls
Subject to Article 9, no person shall cause any vehicle to be on a length of
road identified as a Games Lane, Games Zone or Official Vehicle Only Route
during the restricted hours identified on a drawing forming part of this Order
unless that vehicle is an Official Vehicle.

Where "Official Vehicle" is defined as:

u) ‘Official Vehicle’ means either :-
(i) a vehicle falling within a class of vehicles authorised by the Olympic
Delivery Authority to be issued with a permit and which is displaying
that permit; or
(ii) a vehicle with a vehicle registration number which is authorised by the
Olympic Delivery Authority for inclusion in a list of exempt vehicles.
v) ‘vehicle’ includes any part of a vehicle;
w) ‘Official Vehicle Only Route’ means a length of road which is identified as
an ‘Official Vehicle Only Route’ on a drawing forming part of this Order and
in respect of which traffic signs are in place indicating the controls specified
in this Order;

There are exemptions, but none that apply to pedal cycles.

Enforcement is via the Road Traffic Act 1988 and Traffic Management Act 2004.

Offences under the Road Traffic Act 1988 for "Contravention of traffic regulation order" usually result in a maximum fine of £1,000 (level 3 on the standard scale) - now they may result in a maximum fine of £5,000 (level 5 on the standard scale).

Which, of course, is entirely proportional and fair.

For the purpose of the RTA / RTRA, pedal cycles are not motor vehicles, but are vehicles.

I don't see how the civil penalties under the TMA can apply to cyclists in any way (nor how they can be enforced in any way).

It's all clear as mud.