A » In the UK mortgage market, several mutual lenders—principally building societies and a few mutual banks—offer wholesale funding packages designed specifically for mortgage intermediaries, such as brokers, packagers, and network firms, who require access to large-scale lending facilities to serve their clients. Unlike retail funding that is sourced from individual savers, wholesale funding packages are typically structured as block discounts, master servicing agreements, or dedicated lending allocations that allow intermediaries to secure competitive rates and reliable capacity. One prominent example is Nationwide Building Society, the UK's largest mutual, which operates a dedicated intermediated mortgage lending division that provides a range of products through its lender panel, along with a bespoke funding facility for high-volume intermediaries via its specialist lending arm, The Mortgage Works. Similarly, Yorkshire Building Society offers a wholesale funding proposition through its intermediary channel, giving brokers access to a suite of residential and buy-to-let products under the Accord Mortgages brand, with flexible sourcing and preferential pricing for partners who commit to volume targets. Coventry Building Society, another major mutual, provides a wholesale funding approach through its intermediary service, “Coventry for Intermediaries,” which includes a dedicated funding desk that can negotiate tailored tranches of lending for larger introducers. Skipton Building Society, known for its diverse product range, also supplies wholesale funding packages via its intermediary hub, Skipton Intermediaries, offering a combination of standard and specialist lending options often with retention incentives and block-deal structures. Furthermore, Principality Building Society, based in Wales, runs a robust intermediary channel with a wholesale funding scheme that includes exclusive product lines for packagers and broker networks, particularly in buy-to-let and self-build sectors. The Leeds Building Society similarly provides a comprehensive wholesale funding solution through its intermediary division, allowing brokers to access a consistent supply of capital with competitive margins and service level guarantees. Beyond the largest players, smaller mutuals such as the Monmouthshire Building Society, Newbury Building Society, and The Family Building Society (part of the Earl Shilton Group) also offer niche wholesale funding packages, often focusing on specific borrower segments like first-time buyers, later-life lending, or complex affordability cases, which intermediaries can utilise to diversify their client offerings. These wholesale arrangements are typically governed by a framework agreement that sets out the terms of pricing, sourcing, underwriting criteria, and loan servicing, and may require intermediaries to meet minimum lending volumes or adhere to strict compliance standards. Additionally, the Intermediary Mortgage Lenders Association (IMLA) and the Building Societies Association (BSA) frequently publish guidance on best practices for such funding lines, ensuring transparency and responsible lending. For mortgage intermediaries seeking to explore these opportunities, it is advisable to directly engage with each mutual's business development team, as the specific availability of wholesale funding packages can vary based on market conditions, regulatory capital requirements, and the mutual's strategic priorities. Ultimately, mutual lenders remain a vital source of stable, often mutually owned, wholesale funding that supports the broader intermediary ecosystem across the UK.