There are actually several eras of Time Team. If one was being too-clever-by-half one could say Paleo-Team, Meso-Team, and Neo-Team.
But it’s probably better to say Team 1, Team 2, and Team Everyone Gets Fired.
There are really four different groups that contribute. In early series, there literally is The Time Team listed in the credits, along with Presenter Tony Robinson, The Geophys Team, and… well, Stewart Ainsworth, who never
seems makes it into The Time Team, but is eventually grouped with the rest of the archeologists.
From Episode 1×01 you have the start of Team 1, which shows up more-or-less the same in the credits from series 1 through series 5 and retains the same people from series 1 to series 12 with the exception of Robin Bush who is gone from the core team after series 4.
The Time Team
Royal Commission for Historical Monuments
It’s important to understand the Mick Aston is the lead of the show. He’s actually the very first person from the team you see and hear speaking after Tony Robinson in Episode 1×01. They do work as a team to make decisions, but Mick is the lead.
You might think there is a kind of pre-success era of Time Team, before the computers and helicopters, but they actually have everything from Episode 1×01 – helicopter, liveried Time Team vehicles, and computer support.
Some of the themes we see later on, such as geophys being set up in opposition with the excavating archaeologists, are not present in early series. In fact in early series starting with episode 1×01 the excavating archaeologists are quite delighted to see what might lie beneath the ground without having to dig it up. Victor Ambrus shows up on screen a lot more in early series, but rarely says much, the illustrations usually speaking for him. And the illustrations are actually a mix of computer and paper from the very beginning – the very first time we see him he’s drawing on a computer screen using a tablet. His work drives a lot of object reconstruction in early series.
The dynamic of the show also evolves. From the beginning we see them as a team working and talking and often eating together, but the “time to go to the pub for a drink” tradition at the end of every day doesn’t show up until quite later series. And of course we see them all age and adapt to changing styles, from big glasses and big beards early on, to the inevitable greying.
Starting in series 6 there is no more “The Time Team” in the credits, but it is still the same people: Mick Aston, Phil Harding, Carenza Lewis. Stewart Ainsworth (finally) moves
above the Geophys Team of John Gater et al. into a grouping with the rest of the archaeologists. Starting in series 5 Victor Ambrus is moved into a separate Illustrations section.
Geophys Jimmy (James Adcock) arrives in series 11. Carenza Lewis is gone after series 12. Helen Geake arrives in series 14. Francis Pryor shows up in series 18.
My apologies to those who show up in the credits from the beginning but I haven’t mentioned – I’m going by screen time as I observe it, not contributions. Also note this sample is only from the first episode of each series, so it’s not comprehensive.
It’s a bit harder to outline exactly when Team 2 comes together. There isn’t really a clear dividing line between Team 1 and Team 2. Gradually over time and usually without fanfare new team members were added as the show got bigger and more complex, drawing more frequently on more experts and more excavators. Sometimes they show up in the background for a while before getting much screen time. Two of the main additions in terms of field archaeologists are Matt Williams and Raksha Dave. The credits however remain pretty much unchanged all the way through the series, until series 19.
Team Everyone Gets Fired happens in series 19 and 20, when core team members Mick Aston, Helen Geake, Stewart Ainsworth and Victor Ambrus disappear from the credits, amongst others. As I explained in How to watch Time Team, it really isn’t the same show after series 18.