Tandem Mortgages

Tandem was founded in 2013 as one of the UK's early challenger banks, initially focused on savings and current accounts. The bank pivoted towards green finance, positioning itself as the UK's green digital bank, and acquired Allium Lending in 2021 to enter the mortgage market. This acquisition brought a specialist mortgage book focused on adverse credit and complex income borrowers.

Tandem's mortgage proposition combines two distinct angles: green home improvement finance and specialist residential lending for borrowers with impaired credit. The bank offers Green Home Improvement loans alongside its mortgage range, enabling homeowners to fund energy-efficient upgrades such as solar panels, heat pumps, and insulation. Tandem's green mortgages may offer preferential rates for properties meeting certain EPC ratings.

The bank is authorised by the PRA and regulated by the FCA. Tandem operates as a broker-only lender for its mortgage products, working through intermediaries to ensure borrowers receive appropriate advice. The bank's underwriting team manually assesses applications, considering each borrower's full circumstances rather than relying solely on automated credit scoring.