http://tinypic.com/r/cnuwj/5

Photographed yesterday in Palmerston Park, Southampton. Apologies for
the pic size and quality (mobile phone was playing up).

The shrub was about 2 metres high and 1.5 - 2 across. Flowers were
about 7 cm across, with very prominent stamens. No scent.

It is very attractive, especially as not very much flowers at this time
of year (but I've seen quite a few shrubs flowering at the wrong time
recently). What is it?

--

Jeff