If anybody tells you "You cannot use your ESA evidence for a PIP app or appeal"
see the following cases
CPIP/1055/2018:Tribunals must deal with evidence relating to ESA entitlement when used in support of a PIP appeal
Upper Tribunal Judge: Jacobs
This decision explains the proper approach for a tribunal when presented with evidence relating to a different benefit. In this case, ESA evidence was produced in support of a PIP appeal.
In considering this issue, Judge Jacobs says that It is important to distinguish (a) precedent, (b) evidence, (c) argument, (d) the proper role of the First-tier Tribunal, and (e) the tribunal’s written reasons: Read more...
Others have asked the same question to receive the same answer
Generally i would say no, you shouldn't present the ESA report to the Tribunal because ESA and PIP are two separate benefits with different tests. "But if there is specific evidence from the ESA report that directly relates to the PIP criteria then it can't do any harm to include it."
And many more...