Aldermore, Foundation and The Mortgage Works are making changes to their product ranges this week, with several rates being increased and some products withdrawn altogether.

Foundation will withdraw the majority of products across its buy-to-let range at 5.30pm on Thursday 17 September, with replacement products carrying higher rates being introduced the following day.

Two products will be withdrawn without replacement:

• F2 MUFB five-year fixed at 6.34%, with a £4,995 fee.

• F2 Holiday Let five-year fixed at 6.44%, with a £4,995 fee.

Intermediaries with decisions in principle (DIP) on the affected products must convert them to a full mortgage application (FMA) and submit before 5.30pm on Thursday 17 September.

Any DIP that has not been converted and submitted by the deadline will no longer be valid.

Foundation also said application and valuation fees must be paid within three working days of an FMA being submitted. Applications where either fee remains unpaid by 5.30pm on the third working day following submission will also become invalid.

The Mortgage Works is also making selected rate increases and reductions across its new business and switcher ranges from Thursday 17 September.

New business fixed rates will start from 3.49%, while tracker rates will start from 3.99%. The lender said all trackers will include a switch-to-fix option.

Intermediaries have been advised to consult the lender’s latest new business and switcher product guides for full details of the changes.

Aldermore is withdrawing and repricing rates across its residential and buy-to-let ranges at 5pm on Wednesday 16 September.

The lender has urged brokers to submit DIPs ahead of the deadline, saying existing rates can be secured for 30 days once a DIP has been submitted.

Aldermore confirmed that DIPs remain valid for 30 days and will secure the product even if it is subsequently withdrawn.

The lender has also reminded brokers that cases should generally not be converted to full application until they are fully packaged. Once a DIP is converted to a full application, brokers will have 10 days to provide the required supporting documents.

CHL Mortgages and Moda Mortgages are set to withdraw their current mortgage product ranges on 16 September.