Sarah and Cavina will cover the North and South of England.

Two-year fixes remain the most popular product.

Tandem has also simplified its criteria guide for new homeowners.

Rates have reduced by up to 0.35%.

The new range includes new two-year fixed rates for both buy-to-let and semi-commercial.

The lender has cut rates by 15 basis points across all products.

The lender has introduced more sub-4% fixed rates.

It follows L&G Home Finance’s API link with the later life lending platform Air Sourcing.

The Society has also increased the discount on its variable rates.

The buy-to-let lender has launched sub-4% two-year fixed rates.