ISA & Investment Guides | PlatformCompare

Plain-English guides to UK ISAs, SIPPs and investment platforms. Written from experience, not for search engines.

Barclays
Barclays Removes Its Platform Fee: What It Means for Investors (June 2026)
5 min · June 2026
ISA rules
Can You Hold Multiple ISAs? The 2026/27 Rules Explained
7 min · June 2026
Platform fees
Percentage vs Flat Fee Investment Platforms — Which Is Right for You?
6 min · June 2026
Cheapest ISA
The Cheapest Stocks & Shares ISA by Portfolio Size (2026)
6 min · June 2026
ISA fees
The ISA Fee Crossover Point — Why Portfolio Size Changes Everything
5 min · June 2026
Platform switching
When Does It Make Sense to Leave Hargreaves Lansdown?
6 min · June 2026