A reciprocal EU agreement means the UK uprates pensions in line with inflation and Spain does likewise for their 62 pensioners here.
The UK only pledges to uprate pensions for this year, and might freeze them from 2020 onwards.
Former Pensions minister Ros Altmann says: "It's time for the UK to promise to uprate just as they would if those people lived here."
The metallic fuel under development by Enfission is designed to make both existing and new nuclear power plant designs more efficient and economical through power
uprates and longer fuel cycles.
Combined with increases in power in various plants (power uprates) this allowed nuclear to maintain and increase its share of electricity generation.
This process of requesting operation at thermal power levels above the current licensed power level is referred to as a Power Uprate. The notion of power uprates has been around since the late 1970's.
The extra power comes via changes to the electronic control unit, which
uprates the fuel supply and alters the ignition timing.
While 430,000 were excluded from uprating, about 330,000 living in other countries received the same uprates as pensioners resident in the UK.
Thousands of British citizens living abroad have 'a burning sense of injustice' over the Government's failure to uprate their state retirement pensions in line with inflation, the High Court was told today.