After deciding that the service at Brotzeit was in decline I went out of my way to find new places to grab a drink and a feed.
A quick google and TripAdvisor later I stumbled across Alt. Pizza at Suntec City, which is a 15 minute walk from Swissotel Stamford via the extensive underground shopping centres and walkways. A further 10 minute walk to get through Suntec City and I was in my seat at Alt. Pizza.