iShares Core FTSE 100 vs SPDR FTSE UK All Share
iShares Core FTSE 100 tracks FTSE 100 and SPDR FTSE UK All Share tracks FTSE All-Share. They are realistic alternatives for the same slot in a portfolio, but because the indices are different nobody can tell you in advance which will return more. What can be compared objectively is the cost, the replication method, the domicile and how each one is structured — and that is what this page does.
What each one tracks
This is the underlying difference: they do not follow the same index, so their returns will diverge.
iShares Core FTSE 100
FTSE 100
SPDR FTSE UK All Share
FTSE All-Share
Comparison
| iShares Core FTSE 100 | SPDR FTSE UK All Share | |
|---|---|---|
| Index | FTSE 100 | FTSE All-Share |
| TER | 0.07% | 0.20% |
| Hist. return* | ~6% | ~6% |
| Replication | Physical | Physical |
| Distribution | Distributing | Distributing |
| Domicile | Ireland | Ireland |
| Currency | GBP | GBP |
| Risk | 4/7 | 4/7 |
| ISIN | IE0005042456 | IE00B7452L46 |
What the fee gap actually costs
Applying the SAME 7% gross return to both and contributing €300/month, the only thing moving the result is the TER. This is not a return forecast: it is how much the fee weighs.
| Horizon | iShares Core FTSE 100 | SPDR FTSE UK All Share | Difference |
|---|---|---|---|
| 10 years | €52,025 | €51,649 | €376 |
| 20 years | €155,851 | €153,402 | €2,449 |
| 30 years | €363,061 | €353,865 | €9,196 |
iShares Core FTSE 100 is the cheaper of the two. Remember they track different indices: cost is one factor, not the verdict.
Nobody can know which will perform better: they track different indices and past performance is not a prediction. What is objective today is the cost, the replication, the domicile and the distribution policy.
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Create free accountFrequently asked questions
What is the difference between iShares Core FTSE 100 and SPDR FTSE UK All Share?+
They track different indices: iShares Core FTSE 100 follows FTSE 100 and SPDR FTSE UK All Share follows FTSE All-Share. They also differ in cost (0.07% vs 0.20% TER), replication (physical vs physical) and domicile (Ireland vs Ireland).
Which one will perform better?+
Nobody can know that: they track different indices, so their returns will diverge, and past index performance is not a prediction. What you can control today is the cost, the tax structure and whether the index actually covers what you want exposure to.
Which one is cheaper?+
iShares Core FTSE 100 has the lower annual fee. Applying the same 7% gross return to both with €300/month, that fee gap alone is worth about €2,449 after 20 years — that part is arithmetic, not a forecast.
Accumulating or distributing?+
Both are distributing, so on this point there is no difference between them.
Can I hold both?+
Yes. Unlike two funds tracking the identical index, these give you genuinely different exposure, so holding both is not automatically redundant — just be aware you may end up overlapping on the largest companies and doubling your rebalancing work.