As we were taxiing out at about that time, tower told the fire services that the aircraft currently landing was of the same company as the aircraft with a problem, but not to get confused as the real one was still in the hold. Unfortuanately I forget the company name.
I suspect that if it was the gear pins, the gear would have remained down and locked - with safe indications - so you would not really need the fire services. But perhaps LGW call out the fire trucks for any event just in case?