Ok as in - will it win the boiler installation beauty competition 2026? Probably not.
In a practical sense, it looks 'functional'. Magna-clean type filter. Clumsy condensate piping to who knows where. A few messy solder drips. The odd paint scorch mark.
Bit rough but functioning. How much did you pay for install ? Rolls Royce prices or budget ? If new install and not happy, you usually get the option of a Gas Safe inspection. But they are concerned with safety not aesthetics.