The rave started on Friday and lasted until Tuesday

Owen Morgan, of Marloes Court Farm in Marloes, Pembrokeshire, said he felt powerless when revellers from all over Britain started arriving on his land last Friday.

He was told he needed to get a court order to move them and the ravers, who brought their own huge sound system, stayed over the bank holiday weekend until Tuesday.

Now the Farmers' Union of Wales is demanding the closure of legal loopholes which it says hamper police.

Police carried out spot checks on people arriving but although the event was illegal because the entertainment was unlicensed, officers said the trespass aspect was a civil matter.

There just seems to be nothing in place to stop them doing whatever they like and they just laugh at you Farmer Owen Morgan

Mr Morgan said he was approached by a group of about 20 people who had gained access to his land on Friday morning.

They told him there would be no more than 50 of them and that he needed a court order to remove them, which police confirmed.

"I reluctantly agreed they could stay because they had promised there would be no more than 50 of them. I thought we've got to grin and bare it," he said.

"All through the night there was loads of traffic coming into the yard and turning around - it was chaos.

"It was highly organised and there was a massive sound system there.

"I felt absolutely powerless the whole time - we needed this court order and nothing was going to be done until Tuesday.

"The police then came down on Saturday but by that time they were in such large numbers the police did not have the resources to remove them."

Loopholes

Mr Morgan said some of the revellers had young children with them and there was no sanitation and no water.

To make matters worse, he said that as they were leaving they told him they would back again next year.

"There just seems to be nothing in place in stop them doing whatever they like and they just laugh at you," he added.

Farmers' Union of Wales legal director Barrie Jones said police had some powers under the 1994 Criminal Justice and Public Order Act.

He said: "Obviously there are loopholes in this act which need to be tightened to give the police stronger powers to take action.

"The FUW accepts the police have a difficult job in this matter but we believe if the loopholes were tightened and they looked into existing powers they already have it is possible events such as this could be prevented."

Jonathan Andrews of the Country Land and Business Association said the key to preventing such incidents was to act quickly.

"Our advice is always to act quickly and to seek legal advice either from ourselves or a solicitor.