Thanks, Transpondia and historyenne. I'd hope to qualify for a BV visa under at least one of the "other" categories.
# secondees from overseas companies;
# advisers, consultants, trainers or trouble shooters employed abroad by the same company to which the client firm in the United Kingdom belongs, provided this does not amount to employment paid or unpaid for the UK branch (I am a trainer, but mostly training outside clients, not colleagues)
But I've found more information about secondees that says...
Rule 46G(iii)(f) of the Immigration Rules makes provision for individuals to be seconded by overseas companies to UK companies as business visitors.
The following requirements must be met:
* The UK company has a contract with the overseas company, whereby the UK company is contracted to provide goods or services to the overseas company (and not vice versa)
* There is no corporate relationship between the two companies (i.e. they are not part of the same group of companies)
* The individual will remain employed and paid by the overseas company throughout the visit
* The individual will be seconded by the overseas company to the UK company in a supernumerary capacity to assist the UK company to deliver the contract, for example to clarify the overseas company`s requirements/specifications or to monitor the execution of the contract to ensure its terms are being complied with
Intra-company transferees are specifically excluded from relying on rule 46G(iii)(f) for secondment purposes. Intra-company transferees must apply under Tier 2 (ICT) or another relevant tier of the Points Based System.
Is there any way I might qualify for one of these, or is Tier 2 ICT my only option? Would it be safer just to go as a non-visa national? I've been there on business before as a 3 week trip, no visa. But this time I would seek to go for several months, like 4. I'm assuming the 6mo/12mo rule of thumb still applies for non-visa folk. Any advice?