The blue-chip FTSE 100 and the mid-cap FTSE 250 rose 0.2%, as of 0824 GMT, both looking to extend gains to a fourth straight session.

Banks and the FTSE 350 life insurance sector added 0.4% and 0.6%, respectively.

Among individual stocks, Marks & Spencer rose 1.4% on a media report of plans to open 20 new stores creating 3,400 jobs throughout Britain.

Meanwhile, data by property website Rightmove showed asking prices for homes rose for the first time in two months as the housing market calmed after the turmoil triggered by former prime minister Liz Truss's "mini-budget".

Britain's consumer inflation and retail sales will be among other data points that investors will be watching this week for clues on how the economy fared towards the end of the previous year.

Volumes are expected to be thin due to the Martin Luther King Day federal holiday in the United States.

(Reporting by Johann M Cherian in Bengaluru; Editing by Eileen Soreng)