An unreformed House of Commons could, in theory, evolve into a consultative body like the OTL Lords if reforms never really took place. The problem is that Commons gained at least theoretical supremacy long before the Great Reform and the Lords would still all inherit their seats or be appointed to them.
The key, which I cannot find, is to find a way to "reform" the Lords in some fashion BEFORE Commons takes the driver's seat and in such a way that opens up a road to elected Lords being within the realm of possibility.
While I cannot envision such a system developing in the British Isles, I could see something like that developing in Australia. As I understand, Australian colonial parliaments all evolved in a similar fashion:
- A governor with absolute power
- A governor governing alongside an appointed council. The council consisted of a mix of office holders and local bigwigs.
- A governor governing alongside a partially elected and partially appointed council
- An elected assembly forming
- The government becoming responsible to the assembly
If Australians had a faster adoption of truly democratic council elections, I could see a (small) possibility where the upper houses, the Legislative Council, becomes the chamber to which the government is responsible to while the lower houses become forums for regional representatives to debate local issues and analyze proposed legislation.