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We prove that for each prime power $q$ there is an integer $n$ such that if$M$ is a $3$-connected, representable matroid with a PG$(n-1,q)$-minor and no$U_{2,q^2+1}$-minor, then $M$ is representable over GF$(q)$. We also show thatfor $\ell >= 2$, if $M$ is a $3$-connected, representable matroid ofsufficiently high rank with no $U_{2,\ell+2}$-minor and $|E(M)| \geq(4\ell)^{r(M)/2}$, then $M$ is representable over a field of order at most$\ell$.

Representability of matroids with a large projective geometry minor