  We propose a connected prescription formula in twistor space for all
tree-level form factors of the stress tensor multiplet operator in
$\mathcal{N}=4$ super Yang-Mills, which is a generalisation of the expression
of Roiban, Spradlin and Volovich for superamplitudes. By introducing link
variables, we show that our formula is identical to the recently proposed
four-dimensional scattering equations for form factors. Similarly to the case
of amplitudes, the link representation of form factors is shown to be directly
related to BCFW recursion relations, and is considerably more tractable than
the scattering equations. We also discuss how our results are related to a
recent Grassmannian formulation of form factors, and comment on a possible
derivation of our formula from ambitwistor strings.
