Leaking shower valve pipe replacement

Looking for a plumber with a sensible labour-only quote to replace a leaking pipe connected to an existing shower valve. The current section of pipework is plastic and needs replacing with a short copper pipe section and connector/plate before reconnecting to the existing shower valve ensuring no leakage. Important points regarding access and work: • Pipework is accessible through an existing rear access panel behind the shower wall • No retiling required • Mains isolation valve is inside the flat for easy shut off • Leak appears localised to the connection/short section of pipework near the shower valve connector • Photos can be provided Straightforward repair and fair quote please