  We prove that if $E \subseteq \mathbb{R}^d$ ($d\geq 2$) is a
Lebesgue-measurable set with density larger than $\frac{n-2}{n-1}$, then $E$
contains similar copies of every $n$-point set $P$ at all sufficiently large
scales. Moreover, `sufficiently large' can be taken to be uniform over all $P$
with prescribed size, minimum separation and diameter. On the other hand, we
construct an example to show that the density required to guarantee all large
similar copies of $n$-point sets tends to $1$ at a rate $1- O(n^{-1/5}\log n)$.
