After taking advice from you caps I made one last call to a very reputable dealer close to me. He advised that under no circumstances should I use anything other than a router. Failure to do so would find my console in bits.
Always one to go with the majority and against the establishment I decided to ignore his years of hands on experience and go with the advice of the boys on the forum !!!!
I took my nearly sharp 25mm wood bit, roll of tape and piece of scrap wood G-Clamped behind the proposed hole and depressed the button on my not so powerful cordless drill !!!!!
Well thanks boys, thanks a bloody milliion.......
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It worked, I have a perfect hole
So to all who offered advice, thanks and to all those considering doing a job yourself or paying a dealer, I say seek advice here and have a go. It's worked for me several times now.