Well, I've wandered around various camping shops. The Vango Banshee 2 man is a bit snug for two, the 3 man would fit 2 easily and 3 cosily. But the door on the side is a pain because you end up clambering over each other, and the height at your head/feet is limited and there isn't masses of space to sit up sensibly.
Milletts had pretty much sold out of everything - I had considered a couple of the cheapy eurohike ones there, but they were all gone.
Blacks in town has closed. Looking online there's a couple of cheap eurohike ones, but they're relatively heavy. The Octane 2 looks nice but is far too expensive for a birthday present for him (but I may be visiting that site again when it's my birthday....)
Yeoman's had pretty much all of their cheap and cheerful Peakland models in stock, and pitched for you to look at. SmallestCub and I spent a good half hour climbing in and out of (slightly wobbly, because they weren't all pegged and guyed on the solid wood floor!) various models, playing with zips and comparing porch sizes. He likes the big 3 man tunnel with a gigantic porch, but agreed that it was probably a bit big and heavy for my bike, since it weighs in at nearly 5kg. They had a 2 man double skin dome with a bit of porch space and the slightly smaller and lighter 2 man tunnel one linked to earlier, a couple of quid more in the shop that online, but both of them uner 35 quid. They're clearly cheap tents, but I did once live in a supermarket 20 pound tent for 3 months without suffering massively. The tunnel is a slightly smaller inner, and a slightly lower headspace, but with a bigger and more useful porch. Less than half a kilo difference in the weight, and only a couple of cm in the pack size. And both of them could just about be pitched in the living room, with suitable tying bits to chairs etc, for practising sleeping in.
Although I'm possibly more interested in Jogler's hand-me-down! How much would you want for it, and (and this is a very important question) how idiot-proof is it?