Even when I am totally honest (use the tumble dryer, have taken a number of flights in the past 2 years (mostly work), don't have green energy tariff electricity, ...etc), it's well below the average for this country.
If I fudge it slightly (we actually use the clothes horse indoors and clothes line outdoors as much as dryer, so said no dryer, we intend getting a solar panel this year, intend changing to greener tariff energy, was the slightly more ecofriendly side of the shopping question as I am more in the middle than allowed (1st version I put the slightly less ecofriendly version option - which is still not the least version), and while I don't cycle locally I do walk locally, etc) - it drops from just under 10 tonnes (the conservative answers above) to about 8.5 tonnes per annum. Average being 17.5 tonnes.
We grow some of our own veg, I do shop locally, I use public transport, we keep the heating low, we don't use the car that much and combine trips as much as possible, I do dry clothes naturally, we use low energy appliance and bulbs, I have the heating set to only come on when needed, and tend to cook from scratch rather than pre-prepared a lot. But we are meat-eaters, and consume a lot of dairy, I need to travel abroad for work by air, we do use the car, and have well stocked wardrobes and pantry (including convenience foods) to allow for times when our hectic lives get on top of us sometimes.