Whopity thanks, the required dreaded language proficiency I omitted. As to the skill test- but we don't call it that, the Proficiency Check; I would assess, because of the long lay off, in practice it will not be different save the paperwork.
With regard to the RT.
....or it may have had a 10 year validity in which case it will have to be reissued.
Now just over a month ago he would, most likely, be applying for a UK issued EASA compliant licence with no loss of privileges. In that instance he would not need to have a RT licence reissued even if the old RT licence had expired. Has that changed, I didn't think so, other than the letters EASA are now removed from the cover?