That's very interesting you were questioned by UK border agency. They don't actually have the right to ask you this type of question. The only thing they're allowed is to ask you questions to establish that you are the rightful holder of the passport. The fact that you come and go often to Thailand is, frankly, none of their business.
That's good to know. But really? They 'don't have the right to ask you this type of question ... the only thing they're allowed is to ask you questions to establish that you are the rightful holder of the passport'? Hmm...
Well, the latter sections of the document you linked to state that, as of 2008, UK Border Agency 'immigration staff' dealing with 'British Citizens' at the 'primary checkpoint' have 'additionally been conferred with certain Customs powers' and 'may therefore ask questions with regard to goods in baggage and ... ask the passenger the origin of their flight/journey' which leaves it nicely vague thus giving the bastards veritable carte blanche to make your life a fucking misery.
To clarify, having racked my addled memory...
In Japan, it's not the dudes at passport control ('Border Agency': that check your entry visa, before you pick up your checked-in baggage), but rather the folks at Customs (as you go through the 'Nothing To Declare' EXIT bit with your suitcase) that have stopped me and quizzed me about Thailand in the past. These clowns (probably wanting to practice their shit English, though I only talk to them in Japanese) almost always glance through my passport and check my Jap Resident card then ask a question or two (usually 'What do you do in Japan?' and 'What did you do in Thailand?' before waving me through, no worries.
But in the UK, I've flown into London via Thailand. I've been asked a couple of times at the initial passport check (Border Agency) 'Why do you go to Thailand so often?'. I also once got a connecting domestic flight to Manchester (I think it was). A uniformed bloke at the baggage carousel (so, a Customs officer I presume) stopped me as I made to depart with my case. He asked me where i was arriving from, took my passport, flicked through it, and started asking me all sorts of shit: where I'd been in Thailand, what for, how many times had I visited Thailand in the last 12 months... He then took me aside and rifled through my case, asked me to open my laptop and show him images in the photos folder... He then asked if he could test my hand luggage for 'narcotics'. I said okay. He brought this prod-like scanner stick with a bit of cotton wool at one end that he rubbed around the inside of the bag, Lights flashing and buzzers buzzing: Your bag's tested positive for narcotics, he says. Why might that be? I can only imagine that your machine if not correctly calibrated, I reply. He tries again with a new bit of cotton. This time no bells and whistles. He says I can go.
Never been narcotics in my bag as far as I know. Maybe he was just trying to freak me out: scare tactics, so I'd panic and blab if I had a greased condom full of cocaine stuffed up my arse or whatnot? Well, I didn't, and I didn't.
Edited by Tom Tit, 06 July 2017 - 08:48 AM.