Här är Storbritanniens gränskontorets guide för Intra-Company Överför Tier 2-visum. Du kan ladda ner policyvägledningen PDF från länken till höger på sidan.
Sidan 52 i den PDF-filen säger följande:
Absences from the UK
223. The UK, Channel Islands, Isle of Man and Republic of Ireland form a common travel area. If you leave this area while you are employed in the UK (for example, for holidays, business trips or a secondment overseas), you do not need to make a new application to return to the UK unless your leave expires or lapses.
224. Please note that if you have been assigned a multiple entry Certificate of Sponsorship, this does not override the rules on ceasing to work for your sponsor which are described in paragraph 229 below.
225. If you have been granted entry clearance, or leave to remain for more than six months, your leave will not lapse when you leave the common travel area if you continue to be employed by, and have not ceased working for your sponsor for a period of one calendar month or more (see paragraph 229 below), unless your leave passes its expiry date or you stay outside the UK for more than two years.
226. However, if you do not have entry clearance or you have leave to remain which was granted for less than six months, your leave will lapse if you leave the common travel area.
227. It is important to make sure that if you are travelling overseas for any reason that you fully understand the implications of your leave lapsing or expiring while you are overseas.