The additions mean Head Coach Vern Cotter will have a group with 1,018 international appearances between them at his disposal for the Old Mutual Wealth Cup match at Twickenham Stadium before heading to the Kingspan Stadium in Belfast next week.

Also added to a stellar back division are Bath pair Kahn Fotuali’i and Robbie Freuan, Castres duo Rory Kockott and David Smith, and Montpellier’s Timosi Nagusa and Frans Steyn.

Joining the forward line-up are props Ben Franks (London Irish & New Zealand), Mike Ross (Leinster & Ireland), and Mikheil Nariashvili (Montpellier and Georgia), hooker Richard Hibbard (Gloucester and Wales) and uncapped Toulouse No.8 Gillian Galan.