The FTSE 100 rose 0.9% to 5,791.10 in early morning trading as a weaker US dollar provided support for mining stocks.
The FTSE 100 rose 0.5% to 5,757.22 in early trading, despite negative company announcements across various sectors.
UK equity markets and sterling were largely unfazed by today's Spending Review with investors unsuprised by the level of the cuts.
The FTSE 100 had a slow start to the week, down 0.32% or 18.43 points to 5,684.94, following mixed sessions in Asia and the US.
Large caps are offering once-in-a-decade opportunity on a valuation-and-yield basis, according to Mark Barnett, manager of the Invesco Perpetual Strategic Income fund.
The index of the UK's 100 leading shares has closed down on the day, with major insurers the biggest drag on markets.
The FTSE opened at 5,727 this morning, sliding 0.08% in early trading, although there was a raft of M&A activity among the UK's largest companies.