Mr Haylock said: "The first person Ralph looked at when coming out of a take was me, to see if he got the dialect right, but rather than run over to him each time we worked out a bit of sign language.
"Thumbs up was obvious he got it right, a beckoning meant he would come over and he would practise again, and there was a pucker of the lips for the 'now' sound.
Behind the scenes of filming for The Dig in 2019.
- Credit: Screen Suffolk
"We were blowing kisses at each other throughout the takes and a few eyebrows were raised, as you can imagine."