European equivalent of Equinix?

Interxion has a partnership with Equinix:
Both companies were established in a similar timeframe (1998),
raised similar amounts of money and have similar services/products.
fyi: Interxion has the largest carrier neutral datacentre
footprint in Europe & is one of the few datacentre companies with
really good power engineering standards; note that I am slightly
biased in this matter.