Please be aware that guinea pigs are ground roamers. They need as much space on one level as they can get. A 60x120 cm cage complies with the minimal welfare recommendation for 1-2 guineapigs. Boars should ideally have 60x140 cm or 60x160 cm space. Always give your guinea pigs as much space as you can afford!
Cage Size Guide
Cage providers in the UK
Guinea Pig Cages | Free P&P £29 at zooplus!
http://www.petsathome.com/shop/en/pets/small-pet/guinea-pig
Cage Size Guide
Cage providers in the UK
Guinea Pig Cages | Free P&P £29 at zooplus!
http://www.petsathome.com/shop/en/pets/small-pet/guinea-pig