The MP of the family of a backpacker murdered in Thailand says he despairs whether police will ever commit enough resources to catch her killer.
Kirsty Jones had just begun a round-the-world trip
Kirsty Jones, 23, from Tredomen near Brecon in Powys, died at the start of a gap year exactly seven years ago.
MP Roger Williams also claimed British police had not been allowed to play an active role unlike in the Madeleine McCann inquiry in Portugal.
Several people have been arrested, but there have been no convictions.
Miss Jones, a Liverpool University graduate, was found dead in a room at the £1-a-night Aree guest house in Chiang Mai on 10 August, 2000. She had been raped and strangled.
She was three months into a two-year round-the-world trip.
The murder took place in the northern Thai city of Chiang Mai
The Royal Thai Police launched a third inquiry into her death in 2005, but in the past they have been criticised for their handling of the case.
Mr Williams, MP for Brecon and Radnorshire, said: "It's very interesting in the Madeleine case taking place in Portugal, that our police seem to be much more proactive than they've been allowed to be in Thailand.
"I'm not quite sure if that's because it is a EU country, but our police certainly haven't been allowed to take the initiative in Thailand.
"For instance, they've wanted more DNA checks on people living in the area in which Kirsty was murdered - that doesn't seem to have taken place."
He added: "I do despair at the present moment that the Thai police will ever commit enough resources and energy to get a result.
"I believe that it's quite possible to get a person charged and convicted of this terrible crime.
"But the way the Thai police are approaching it at the moment, I don't think that is going to take place.
"So, we need to really use all the resources we have got through our Foreign and Commonwealth Office, through our ambassador in Thailand and all the other resources that we've got, in order to stir the Royal Thai Police into action to ensure they undertake all the necessary investigations."
Dyfed-Powys Police became involved in the investigation in September 2001 after Kristy's family expressed frustration at the way Thai police were handling the hunt.
In 2003, the force was asked to interview a number of key witnesses in Britain, and international crime agency Interpol carried out a worldwide search of DNA databases.
The BBC Wales news website has tried to contact the Thai embassy for a response but has been unable to get one.