TOM Waterhouse should ''embrace'' a plan by authorities to tighten controls around his business' links to his mother Gai's horse training operation, as it would protect his reputation, too, Racing NSW boss Peter V'landys said on Tuesday.

LISA DAVIES & KATE MCCLYMONT report for the SYDNEY MORNING HERALD that as the fall-out over the More Joyous inquiry continues, Mr V'landys revealed a Racing NSW board meeting would discuss a raft of changes following a thorough examination of what had taken place.

Stewards are still waiting for brothel owner Eddie Hayson to provide the names of the two sources he claimed told him More Joyous had neck problems and to avoid betting on her.

At Monday's racing inquiry, Mr Hayson asked if he could talk to the two sources before providing their names to stewards.

One of them had a connection to the stables of trainer Gai Waterhouse, he said.

But the names have not been forthcoming and stewards have written to Mr Hayson's lawyer Bill O'Brien requesting them.

''I am not hanging my hat on it,'' said chief steward Ray ''The Hat'' Murrihy, as to the prospects of Mr Hayson's sources providing dramatic new lines of inquiry.

Mr Murrihy said it was not an offence to gossip but it was a serious matter if stablehands or strappers were ''selling privileged information for pecuniary reward''.

Mr V'landys said the public perception that a conflict of interest may have existed between members of the Waterhouse family - even though it had not been proved in the recent inquiry - had become of high priority to the sport's governing body.

He said the public perception of what was going on was as important as the reality.

''It's definitely a concern, we want public confidence in racing to be at the highest level, the issue has been aired significantly in recent days and we have to address it,'' he said on Tuesday.

He rejected any suggestion there may be some resistance from bookmaker Tom Waterhouse, who has used his mother Gai in his advertising campaigns.

''I think Tom would probably welcome [these measures] … he doesn't want to be seen to be doing anything wrong and he's been accused of doing just that recently,'' he said. ''I think that he will welcome it and embrace it because it's also designed to protect him.''

Mr V'landys said the allegation by businessman John Singleton that Tom Waterhouse had passed on inside information about his champion mare had not been proved, but it could not have been good for business.

''The measure, ironically, is designed to ensure there's no perception of a conflict of interest, but it's also designed to protect the Waterhouses so they don't have to worry about this in the future,'' he said.

The next board meeting of Racing NSW would be held within weeks, where a variety of changes would be debated, including an invitation by the NSW government to make a formal request for racing stewards to have powers to compel witnesses to give evidence.

A spokesman for Tom Waterhouse said there would be ''no comment at this stage'' on the issue.