If you currently have a Masters degree and meet the requirements for the UK Tier 1 visa it may be worth applying now. UK Immigration will probably be making significant changes to the requirements for the UK Tier 1 visa very soon.
In early December 2009 the Migration Advisory Committee (MAC) recommended various changes to the Tier 1 visa scheme. MAC recommended that those with a Bachelors degree and not just those with a Masters Degree or equivalent should be able to come under the Tier 1 visa. This will benefit many people. However, MAC also said that there should be a substantial increase in the thresholds under which you can gain points for previous annual earnings.
The UK Tier 1 visa allows you to work in the UK for any employer. You can also be self employed. The freedom to work for anyone in a professional level role in the UK has made the UK Tier 1 visa a popular choice for highly skilled overseas professionals.