ESA is looking into the payload delivery systems and other factors that might make Skylon useful to it.
Skylon to be studied as potential ESA launch vehicle
A video of operations which shows, amongst other things, how it gets payloads into geostationary orbit from low earth
[VIMEO]42682980[/VIMEO]
If the tags don't work then here's the link:
SKYLON - Operations on Vimeo