I am currently in USA where I have bought a bike and been touring up east coast. I wish to fly the bike back home to UK. When I get the bike shop to put it in a box, can I include the tent, pannier, sleeping bag etc into the bike box to lessen my load? Any advice appreciated. Thanks
It depends on how the box is getting back to the UK
If you are going to airfreight it back (quick but expensive) then check with the freighters, there is usually a max weight
per package of 20kg (which the Americans will no doubt round up/down to pounds) .
If you are going to ship it back (slow but cheap) the again check with the shippers, but there is no maximum weight or size consideration (as long as it fits in a container). Personally that is what I'd do, put bike and all the gear plus any other heavy stuff you don't need into a a box and ship it home, it will take a couple of months to arrive, but its getting cold, wet and dark in the UK, so you can do without the gear for a couple of months.
If you intend on boxing it all up and bringing it home on the same plane as you, then you need the airline details of what you can take and in what size, but the usual maximum is 20 kg in total with a cubic no bigger than 0.5m.
Warnings:
The American airlines have different weight restrictions to the rest of the world, so you may find you can fly OUT of the USA with up to 40kg.
This may be OK if you are flying straight home, however if you are changing planes outside the USA you can be hit for massive and prohibitive sliding baggage charges for every Kilo over 20.
A bike bought in the USA being imported into the UK would have to pay 20% of the European value of the bike in VAT, so therefore you took your bike out with you and are now bringing it home. Ensure it looks the part, no cleaning.
Do not bring any of your bike tools back in hand luggage.
Airline bike boxing instructions are a guide only; It depends on two things, the person at the counter what they are prepared to take and the Baggage Handling Company that run the airport, for example in Shannon airport you can bring a bike IN on British Airways without any boxing or packaging, however to get it OUT on the return flight the bike must be fully broken down, de-pressurised and boxed.