The minister said the £7bn railway line is needed to deliver a workforce to the city.
The LIQs are designed to give EWR Co up-to-date information about land ownership, occupation and usage.
The meeting was organised by Cambridge Approaches.
The railway will connect Oxford to Cambridge via new stations at Cambourne and Tempsford, near St Neots.
National Audit Office also reveals full electrification will cost £1bn.
Beth West said the £5bn route is not just a railway but an ‘economic project’.
Campaigners made their feelings clear at drop-in events.
Four-platform rail link on Cambridge Biomedical Campus expects to handle 1.8m passengers a year.
But East West Railway Co admits northern route would be cheaper and less environmentally damaging
It calculates that 300 buses per hour would be needed under GCP plans - but says phase one of light rail could be delivered for £600m.
The government has also announced funding relating to growth around new stations.
More homes than currently exist in the whole of Cambridge could be built in the area by 2041 under a revised housing blueprint put forward.
There is still uncertainty over the final route.
A new £184million Cambridge South railway station will be built after plans were approved by the Department for Transport.
