Not sure how big your pushchair is but one to look at is britax be smart 3 which folds down quite small I know you can get the four wheel one behind all the seats in a c4 grand picasso (with all seven seats up if you take the wheels off) its light to push and lighter than a maclaren when folded. The other one to look at is the out and about 360 nipper. Both pushchairs have a high build quality so will last. There may be others to look at if space is the most important thing with the new pushchair

Micralite fastfold! Great hybrid. Fab for on the bus. Takes up little space in the home. Free standing when folded. You can get off road front wheels too, which means it will manage the toughest off road terrains of forest, pebble beach, ploughed field or water meadow. With the standard front wheels it will do park land, cobbles, rough footpaths, sandy beaches. You can tilt it onto the back wheels if the going gets rougher for a bit!
Absolutely love ours. So light, easy to push.

Another vote for Micralite - though mine is a Toro.

Sorry to hijack. Can I ask some questions about the micralite? How is the fold? Does the seat go upright for a toddler? Do the little wheels get things stck in them?

ive got a fastfold as well, fab! tend to use it for hols as great on the sand, just tilt it back onto the back wheels (im pretty sure if you get the all terain wheels you cant fold it) seat is like a hammock, you can either have it very upright or semi reclined (both our children havent had problem taking naps in it), dont quiet know what you mean about the little wheels getting things stuck in them??...there not that small
regards
Tracey
x
oh p.s. when wer on hols wev taken it on buses without any problems
x

Never had things stuck in the wheels - on the fast fold - the hammock seat is either a) very upright or b) a little reclined - does not lay back completely. The latest micralites have a better recline - and I've seen them quite cheap on ebay too - they have a grey mesh seat - and then a hood in whatever colour you choose - and you can opt to buy a seat liner for them - they are only 6kg or something crazy like that - I have the fastfold version - it is extremely light.
You cannot fold it with the off road wheels in place - but we have the off road wheels - aas they are very handy when we're out with the car at weekends - as we tend to go to the forest or the very pebbly beach!
My kids have no problems napping in the fastfold.
I also bought the extended handlebars and the buggy board - for our 6y old (gets tired walking home from school - it is a few miles).
I'm a big fan of micralite - and would choose a micralite over a maclaren ANY day!

Micralite superlite here

Oh and mine has been great on the bus also!
It also takes up hardly any room in our hallway (tiny terraced house) and will actually fit into the boot of our Vauxhall Zafira (with all rear seats up - so only tiny "boot" space)!!! (I do have to pop the rear wheels off first - easy to do and lay them in the boot first).