The alternative options that have been ruled out as unworkable

excerpt from the consultation brochure
As part of the ongoing Croxley rail link consultation leading to Transport and works act submission the following alternative options have been assessed:
Retention of existing Watford terminus and running a split service to Watford Junction.
Reopening the Croxley Green Branch Line and not connecting to the Metropolitan Line
Conversion of the Croxley Green Branch Line to a segregated bus way
Improvements to the existing local bus network
Connecting the rail link to the St Albans Abbey Line and Amersham branch if the Metropolitan Line
Construction of a watford relief road
Tunnelling under Cassionury Park
The preferred scheme continues to offer the greatest benefits whilst remaining financially and operationally viable

Croxley Rail Link is in public consultation

Croxley Rail link is the proposal for the diversion and extension of the Metropolitan Line from Croxley Met station along the disused Croxley Green rail link branch to Watford Junction mainline station.

The public consultation is ongoing prior to transport and works act submission.

The website for information on it is www.croxleyraillink.com

The consultation booklet explains how all other options have been examined and that this one has the best economic case.