Western Australia's Taxi Industry Forum is seeking an urgent meeting with the state Transport Minister following the launch of ride-share service UberX.

Uber this week rolled out the UberX service in Perth, after setting up in other Australian cities.

The company claimed it could offer services 20 per cent cheaper than regular taxi services.

Transport Minister Dean Nalder suggested earlier this year that deregulation was inevitable and taxi plate owners might not be compensated.

Last week, however, he said Uber may not be complying with the law.

The chief executive of the Taxi Industry Forum, Howard Lance, said the Department of Transport did not appear to have been fulfilling its role as a regulator.

"We have asked for a meeting with the minister, yes; so far we haven't had one," he said.

"I don't hesitate to say that we are not happy with the department's response to Uber, and by definition that means the minister that's in charge of it by association.

"We're not totally happy with his performance in this regard."

The organisation was appealing to the WA Government to provide them with some certainty.

Mr Lance said taxi drivers were concerned.

"The drivers are ringing me up and they're sending text messages and they're sending me photos and numbers and things that are all asking me the same question, 'What's been done? What are these guys doing?'" Mr Lance said.

"We ourselves have written a formal letter to the department asking what's going on, we've rung them and spoken to them over the phone, it took three days to get a one line response which we were not impressed with at all."

Former Labor minister and now Federal MP Alannah MacTiernan declared her support for Uber but criticised the WA Government for failing to prepare for it.