Curiosity - on the M4 today Small GWR tender loco

[Brightonboy]

MODs please move elsewhere if more appropriate.

I was west bound on the M4 near Swindon around 1530 - 1600 this afternoon (23/3) when I passed a GWR loco heading East on a low loader. As I was doing 70 I wasn't able to get a good look to see what it was but it was a small(ish) tender loco with a number beginning with a 6 (I think), the tender was on a second low loader and looked quite small too.
Anyone know what it was and where it was travelling between?

Thanks

 

[Cowley]

MODs please move elsewhere if more appropriate.

I was west bound on the M4 near Swindon around 1530 - 1600 this afternoon (23/3) when I passed a GWR loco heading East on a low loader. As I was doing 70 I wasn't able to get a good look to see what it was but it was a small(ish) tender loco with a number beginning with a 6 (I think), the tender was on a second low loader and looked quite small too.
Anyone know what it was and where it was travelling between?

Thanks

I’m thinking that you might have seen 6880 Betton Grange.

Not sure where it was going, but here’s a (not very good) photo of it I took last year showing its low tender.

 

[158760]

I’m pretty sure it’s 6880 - it’s moving down south for Swanage’s Spring Steam Gala at the end of this week, although HOPS says it’s not due to arrive until Wednesday.

 

[Brightonboy]

Thanks both, she certainly fits the bill, as does the tender, and 80 would fit with what I think I saw of the number.