Over the next 20 or so years it is planned that a large area of land south of the current Brent Cross shopping centre will be subject to a massive redevelopment scheme including retail, office and residential developments. This land is in the London Borough of Barnet, and they are the planning authority. However, Brent has a long border with the site along the A5, and it will affect Brent residents greatly. Included in the current plans are major new road schemes and a new station on the Thameslink Line. The development will change the face of NW London.
This is mostly of interest to Brent Cyclists because this whole area is currently a huge barrier to cycling. Desirable cycle routes from Brent eastwards and southwards are made very difficult by the severance caused by the North Circular Road, the M1, the Thameslink/Midland railway line, and the A41. It is likely that there will be little change in this environment without the privately-funded redevelopment of this area.
The Brent Cross area is currently very difficult for cycling owing to the barriers such as the North Circular Road
Brent Cyclists are not opposed to the redevelopment of the Brent Cross Crickelwood (BXC) area in principle, but we are opposed to the current plans which are highly car-centric, do not cater well for cycling and walking, and include insufficient serious public transport infrastructure. Though the developers claim to be supportive of cycling, their plans show little understanding of the needs of cyclists, and they are trying to fit cycling and walking infrastructure around a basic plan which seems to be a throwback to US-influenced 1960/70s motor-dominated urban concept that is entirely inappropriate to the future development of London in the age of global warming.
Brent cyclists have been talking to the developers of BXC, Barnet Council, Brent Council, and Transport for London on this subject, together with Barnet Cyclists. We have been instrumental in getting Brent Council to officially oppose the development. Camden Council and Harrow Council are also opposed. We are also part of the Coalition for a Sustainable Brent Cross Cricklewood Redevelopment, a grouping of voluntary groups across Brent and Barnet opposed to the current BXC plans.
Opposition to BXC in the local community centres mainly around the extra traffic it is likely to generate on Brent's roads, the poor public transport provision (see the Campaign for Better Transport's site for an alternative plan involving orbital light rail for NW London), the poor consultation with Brent residents, and the prospect of a new waste facility on the A5.
Brent (and Barnet) Cyclists principal problems with the details of the current plans are the following:

Currently cyclists have the option of going through Staples Corner West using this slip road and the roundabout. Under the plans, commuting cyclists will be forced to use the flyover

Brent Cross Cricklewood planners want to create more pedestrian bridges like this which do not allow cycling
Update: 18 March 2010
According to the Ham&High, "John Denham has issued a stop notice on the scheme, giving him more time to decide whether to call for a public enquiry"