Visas for visiting the UAE will be issued on arrival to all UK nationals. This allows you to stay in the country for 30 days. The emirate you arrived in can then extend your visa for another 30 days, three days before its expiry date. However, you must leave the country at the end of this period. Your passport must have at least six months validity from the date of entry, so check before traveling.
If you intend to work in the UAE you’ll need to be sponsored by an employer – you cannot work on a visit or a tourist visa. Once you’ve accepted a job offer your employer will apply for a residency visa on your behalf and you’ll then be able to get a work permit from the Ministry of Labour. You’re not entitled to work without this permit and doing so is illegal.
Residency visas are subject to a medical examination; those who test positive for HIV or hepatitis will be deported.
Remember to cancel your work visa before permanently leaving the UAE. Failure to do so could lead to you being reported as an absconder, resulting in your arrest if you return to the UAE.