Royal Bank of Scotland (RBS) is setting up its first-ever panel of flexi-lawyer providers, as Barclays also reviews its current relationships amid growing take-up of flexible legal resources by key clients.

RBS has invited a number of providers to take part in the process, which will see it establish a 'flexible resourcing' legal panel for the first time.

The bank contacted firms earlier this year, and the process is now "well underway", according to one partner at a firm taking part.

The partner said: "I think we'll see other banks looking at this, as well as other Fortune 500 companies. Any organisation with a large legal team that uses more flexible resources could look at setting up similar panels or supply lists. Large organisations tend to have similar setups for the provision of accountancy and IT services, and we're now seeing this in legal too."

Meanwhile, Barclays, which first established a roster of contract lawyer providers in 2015, is currently reviewing its relationships with the firms it appointed three years ago.

The 2015 process saw a line-up including Clifford Chance (CC) and Freshfields Bruckhaus Deringer chosen as preferred firms. The current review is expected to be completed during the next few months.

Barclays also recently completed its last-ever traditional review of its main legal panel, as it shifts to a new system it describes as "active relationship management", which will allow it to add and remove firms on an ad hoc basis.

That process saw the panel trimmed from about 140 firms to 100, with firms understood to have won places including Allen & Overy, CC, Linklaters, Dentons, Simmons & Simmons, Norton Rose Fulbright, Baker McKenzie, Cadwalader Wickersham & Taft, Taylor Wessing and Ashurst.

Recent years have seen a flurry of law firms set up flexi-lawyer offerings to compete with providers such as Axiom and Obelisk – including Pinsent Masons, which launched Vario in 2013; Eversheds Sutherland, which set up Agile in 2011; and Allen & Overy, which has increased the number of lawyers signed up to its Peerpoint service by more than 50% during the past year.

Market leader LOD, which was founded in 2007, was bought out by private equity house Bowmark Capital earlier this year and is now looking to expand internationally, with a US launch on the cards.