Personally I think that is a bit small for a robo. But good point, I completely forgot about the Pets at home XL barred cage which is not a bad size. I wouldn't worry about the bar climbing as long as the cage is not too tall. Our robo bar climbed a bit.
This is the pets at home xl barred cage. It's about 70 x 40. A bit on the small side for a robo maybe as less floor area than a standard duna multy. I don't think the access/doors are that good either for interaction and handling, but then the top is easy enough to lift off (except you don't want a robo jumping out).
https://www.petsathome.com/shop/en/p...me-extra-large
A better option size wise would be the standard duna multy. It's not too expensive. Robos can be very active though which is why I went with an 80 x 50 cage and if set up right you could go bigger. But the standard duna multy would be a better size than the pets at home one. And better value for money (about the same price).
https://www.portonaquapet.co.uk/shop...a-Multy-M36261