Source: Sharecast
Consensus is for a rise from £11.25bn in November to £13.4bn for December.
Across the Channel, at 1100 BST the German central bank will release its monthly bulletin, followed by a speech from European Central Bank president Christine Lagarde at 1515 BST.
In the US, at 1800 BST the Treasury will hold an auction of 20-year debt.
Low-cost airline Easyjet is among the corporates due to update its shareholders on Wednesday.
Last November the carrier guided towards full-fiscal year capacity growth of 3% with easyJet holidays customers seen increasing by a quarter from 2.6m.
City analyst Michael Hewson notes that the company's first half tends to be loss-making with the first quarter usually representing the weakest stretch of the year.
Wednesday 22 January
FINALS
Residential Secure Income, LBG Media
Q1
easyJet
Q4
PensionBee Group
TRADING ANNOUNCEMENTS
Intermediate Capital Group, Quilter, Wetherspoon (J.D.)
AGMs
Tracsis, JPMorgan Japanese Inv Trust, ASOS
GMs
Kavango Resources, Herald Investment Trust
ANNUAL REPORT
Residential Secure Income
INTERIM DIVIDEND PAYMENT DATE
Montanaro European Smaller Companies Trust, Northern Venture Trust, Pharos Energy, Northern 3 VCT, Northern 2 VCT
UK ECONOMIC ANNOUNCEMENTS
Public Sector Net Borrowing (07:00)
INTERNATIONAL ECONOMIC ANNOUNCEMENTS
MBA Mortgage Applications (US) (12:00)
Crude Oil Inventories (US) (15:30)