For someone based in the UK, that's what we would normally expect.  Hence, the question to you.

Nevertheless, you shouldn't simply forgo the FEIE in favor of FTC without first considering the implications and whether it is really more beneficial to your client if FEIE had been claimed in previous years because that would be considered a revocation of the election.

What happened to the CTC/ACTC you thought your client should be able to claim based on the US-UK DTA?