What are peoples opinions of asylum seekers in the UK?

There is deep skepticism against asylum seekers. On the one hand everyone can symphatise with genuine asylum seekers. But most people feel that this system being abused, that most asylum applicants are merely economic migrants that use the system to live in the UK when they would otherwise not qualify for an entry visa. The fact is that most asylum claims are denied because the vast majority are not able to prove their case. And when asylum is denied, they dont leave the country and work illegally in the UK (which is a privilege granted by legal residency and they dont pay into the NIS). So they go from place to place working illegally and making sure they DO NOT carry their passport or have it readily accessible where they live. In the UK, Immigration is required to have the passport of the person they are trying to deport, the failed asylum seekers, knowing this rule, purposefully hide their passport so that if caught, they will be released and not deported. It is things like this that creates a negative impression of asylum seekers.