Representability of matroids with a large projective geometry minor

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 that for $\mathrm{\ell }>=2$, if $M$ is a $3$-connected, representable matroid of sufficiently high rank with no $U_{2,\mathrm{\ell }+2}$-minor and $|E(M)| \geq (4\ell)^{r(M)/2}$,then$M$isrepresentableoverafieldoforderatmost$\ell$.