The major taxi and private hire companies in Eastbourne say there has been an increase in the numbers of people assaulting drivers, damaging their cars and making off without payment.
They have now vowed to prosecute offenders and to exchange information to safeguard their drivers and staff.
Barry Morris, the chairman of 720 Taxis, said, "Recently there has been a number of offences committed against drivers including violence, criminal damage and making off without payment which have led to criminal prosecutions.
"As a continuation of the Eastbourne Nightwatch scheme, the major taxi and private hire companies have joined together to fight the threat of any criminal offences being committed against our drivers or staff."
Eastbourne driver Mick Grabiner was recently assaulted and had his vehicle damaged after picking up three youngsters in St Leonard's Road.
When he realised the group had no money between them to pay the £6.40 fare he pulled over in Decoy Drive and asked them to get out of his car.
One punched him and then thumped a rear window so hard it smashed.
Police and fellow cabbies rushed to the park and a youth was caught. A teenager has since been cautioned in connection with the incident.
Mr Grabiner is now planning to pursue the matter through the civil courts.
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