British stocks are frequently overlooked by investors drawn to high-profile American names, but domestic equities have quietly delivered impressive returns.
There are currently 42 members of the FTSE 100 that have outperformed Microsoft over the past five years, making a compelling case for UK-focused portfolios.
For most investors, building wealth is not about deploying a large lump sum but rather committing a consistent monthly amount into a tax-efficient wrapper like a Stocks and Shares ISA.
All income and capital gains generated inside an ISA are sheltered from tax, making it one of the most straightforward and effective long-term savings vehicles available to UK investors.
Assuming an individual sets aside £250 per month over 30 years, the final pot size depends heavily on the annual rate of return achieved throughout that period.
At 6% annual returns, the ISA would grow to £237,175, while an 8% return would produce £339,849 and a 10% annual return would compound that monthly contribution to £493,482.
An 8% annual return appears realistic given that Microsoft has averaged 7.9% annual share price growth over the past five years, and 42 FTSE 100 stocks have done better than that benchmark.
The 42 FTSE 100 outperformers averaged a 22% annual return over that period, with Rolls-Royce Holdings delivering a standout 66% annually, though such exceptional performances are unlikely to be repeated indefinitely.
SSE (LSE: SSE) is one UK stock that has delivered a near-8% annual return since June 2021, positioning it as a candidate for long-term ISA investors seeking steady compounding growth.
The group, which claims to be “at the heart of the clean energy transition”, currently operates 5GW of renewable energy projects with another 2.5GW under construction and 18GW in its development pipeline.
SSE is targeting earnings per share growth of between 10% and 13% per year through to 2031, underpinned by structural demand for clean energy and the rising electricity requirements of data centres.
The company does carry elevated debt, given the capital-intensive nature of energy infrastructure, and it operates in regulated markets where a shift in government policy could pose a threat to earnings.
However, the direction of UK energy policy remains clearly oriented towards net zero, and demand for electricity remains resilient regardless of broader economic conditions.
For long-term investors willing to hold through short-term volatility, SSE represents the kind of steady and reliable performer that could be placed in an ISA and left to compound over decades.