I've been thinking... and was SM:TV the only major ITV Saturday morning show to come from London? Number 73, Motormouth, What's Up Doc, Telegantic Megavision, Wow and MoM came from Maidstone, the final series of What's Up Doc and It's Not Just Saturday were from Glasgow, Tiswas was from Birmingham, Mashed and Gimme 5 were in Newcastle, Get Fresh and Ghost Train were on tour so I imagine some episodes came from London though both were produced in Newcastle too.
I'm not 100% sure where Scratchy and Co and Tricky came from, though the latter was just a bloke in front of a microphone controlling computer animation anyway and could have been made anywhere. There's some 70s and early 80s ones I might have forgotten... but seems interesting that ITV Saturday mornings mostly stayed away from London until SM:TV.
Get Fresh and Ghost Train were on tour so I imagine some episodes came from London though both were produced in Newcastle too.
Get Fresh and Ghost Train never came to London - it didn't visit any of the Big Five regions as the intention was to provide opportunities for the smaller companies to get on the network. As my brilliant Get Fresh episode guide (as stolen to whack on Wikipedia) points out, the nearest Get Fresh got was Colchester, via Anglia - https://www.tvforum.co.uk/tvhome/get-fresh-40790
I think Scratchy and Co and Tricky both came from facilities in London, I think Scratchy might have been made at Molinaire (the studio Central did the original Children's ITV links), but as you say you didn't see that on air. There were local Saturday morning programmes from London in the shape of Saturday Scene and London Bridge though, like CBBC, they were made by the presentation department and not networked. LWT didn't usually have a fully-fledged children's department as they didn't broadcast during traditional children's time in the week (they did have one when it opened and they did a few shows on weekend mornings, but it was closed very quickly as the station was in a state), and for most of its life, the shows they did of interest to kids came from the adult drama and entertainment departments.
Scratchy and Co was a Mentorn Midlands production wasn't it?.
They had offices and a small studio in Vittoria Street in the Jewellery Quarter area of Birmingham, so given as you say, it was a very easy one camera set up - chances are it was recorded there.
Scratchy and Co was a Mentorn Midlands production wasn't it?.
They had offices and a small studio in Vittoria Street in the Jewellery Quarter area of Birmingham, so given as you say, it was a very easy one camera set up - chances are it was recorded there.
It was definitely recorded there, at least when it was just a green screen set up. Perhaps they moved elsewhere when the set became more elaborate, but the facilities on Vittoria Street were certainly capable of housing the physical set.