You wait for ages, then two come along at once!
In the SPCK shop today I found a world church prayer book called, surprisingly enough, Prayers Encircling the World. Published by SPCK in 1998 it does tend to be a bit 'special serivce' heavy and has quite a hefty proportion of 'white' if not 'northern hemisphere white western' stuff, but it looks promising. It looks like this:
It can also be picked up from Amazon second hand quite cheaply.
The book Stuart Jenkins alluded to, A Procession of Prayers by John Carden, comes in two editions with covers looking like
this:
In due course I'll let you know my considered opinions on these! in the meantime, if you know of others I'd be delighted to hear from you.