A promising opening on the FTSE has seen the index climb 41.3 points, or 0.72%, to 5,743.4.
AstraZeneca leads the early morning winners, jumping 95p, or 5.04%, to £19.79, while Alliance & Leicester also gained, up 23p to 541.5p.
The Royal Bank of Scotland Group, Barclays and HBOS have also made headway on Tuesday.
However, gains are being stemmed by early setbacks for Lonmin, down 102p, or 3.32%, to £29.69, Anglo American and Xstrata.
In the US, the Dow Jones made marginal gains on Monday, climbing 46.49 points, or 0.38%, to 12,262.89.
Home Depot advanced 0.59 points, or 2.15%, to 27.97, while Pfizer also gained, climbing 0.43 points, or 2.1%, to 20.93. GEN Motors, Intel Corporation and AT&T also advanced.
However, Merck, down 6.56, or 14.74%, to 37.95, Altria Group and Hewlett Packard all ended Monday in the red.
Japanese stocks rebounded after pharmaceutical companies announced new treatment studies and electronics makers rose on optimism demand in the US will weather a slowdown.
The Nikkei 225 Stock Average climbed 0.88, or 1%, to 12,656.42 at the close in Tokyo.
020 7034 2636
All-day event on 24 April
Consequences could be more severe than in stress tests
AFH has six segregated mandate funds
Variable operating expenses