Mortgage Brain has announced that it has added the new buy-to-let (BTL) transaction provider, Rely, to its Sourcing Brain and Criteria Brian modules.
Rely was officially launched earlier this month by OSB Group and has been developed to provide brokers with a faster way to transact BTL mortgages on behalf of their landlord clients.
Mortgage Brain said that the new partnership will enable its brokers to access Rely’s range of BTL mortgage products.
The collaboration comes as £8.8bn in new BTL lending was recorded in Q2 2025, with rental yields surpassing 7%.
Group intermediary director at OSB Group, Adrian Moloney, said: "We’re thrilled to partner with Mortgage Brain, a leading force in mortgage technology and a company that shares our vision for delivering a smarter, more efficient experience for brokers and their clients. This collaboration brings together two businesses united by similar values with a focus on enabling brokers to do their best work.
"Through Sourcing Brain and Criteria Brain, Rely can offer brokers even greater accessibility to our data-driven lending platform, helping them find solutions faster, manage risk more confidently, and deliver exceptional outcomes for their clients."
Sales and marketing director at Mortgage Brain, Neil Wyatt, added: "We’re delighted to welcome Rely to Sourcing Brain and Criteria Brain. Mortgage Brain has enjoyed a respected and mutually supportive relationship with OSB Group for many years and so this partnership is a natural fit.
"Both Mortgage Brain and Rely share a commitment to innovation, efficiency, and empowering brokers with smarter technology. Together, we’re making specialist lending simpler, faster and more predictable for brokers and their clients, with greater product choice, value and confidence across a wide range of BTL scenarios."










Recent Stories