Thank you! I don't think I'll have time to do much in the next couple of months, but it's definitely on my to-do list - I have a completely unused loft with no insulation after all...
At the very least order the dongle and just track with the provided antenna. I imagine you'll probably get most things coming in and out of all the London airports even with that.
CPC do a good bundle that includes an SD card - the NOOBS bundle. I'd then get a £3 case off ebay. But then you'd need a power supply I guess, if you don't have a spare phone charger lying around.