Saracens have clinched the signing of Billy Vunipola and James Johnston ahead of next season's European campaign.
The Wasps No.8 eight Vunipola and Harlequins prop have both penned long-term contracts with the Watford outfit.
Vunipola's elder brother Mako is also one of 10 current Saracens stars to agree new deals.
The other players being current England wing David Strettle, Richard Wigglesworth, Eoin Sherriff, Will Fraser, Ben Spencer, Nils Mordt, Duncan Taylor, Ben Ransom and James Short.
The news is a welcome boost for Sarries ahead of their final Pool One match against Edinburgh, in which they can secure a home quarter-final.
