Even with my new setup, space is/will still be at a premium.

Just to go slightly off topic (don't worry - I'll bring it back again, honest!!) has anyone else noticed that not matter how many storage nooks and crannies you find or add (in the shape of tank bags and panniers etc) you will
never ever have "enough" space for going on a trip. You always used to manage with a rucksack, then you got a tankbag and yet you still need more. Then a top box (my current stage), then you start looking at side panniers. Its a never ending vicious circle!
Anyway, back on topic - I've got a can of synthetic latex stuff for sealing the tyre from the inside. Bought a can for my mate to rescue him from work once and the stuff works wonders. The only problem is that while it pressurises the tyre somewhat it doesn't do a complete job. Fortunately that day we borrowed a foot pump off someone else at the office but if I was out in the wild blue yonder then I'm not sure it'd be quite up to scratch. I'm not convinced about these CO2 cartridges to be honest, just seems a lot of hassle compared to a small compressor? The trick is finding a compressor here in the UK that can fit in the premium space

Whatever that may be!