Can anyone recommend a decent white bathroom suite not much more than
=A3300?

Screwfix seem to do some reasonable ones, e.g. the "Avenue Suite" but
it's difficult to tell from the photos on the website.
Likewise B&Q do a "Madrid Bathroom Suite" which seems to fit the
bill.



The cheap bathroom suites offered by the sheds all seem to offer a
"push button" bog flushing mechanism (excuse my use of technical
jargon).

I imagine that such a mechanism would be flimsier and less reliable
than an old-fashioned lever flush.
However, push-buttons seem to be popular on the continent. So maybe I
am wrong in my assumption...

Bruce