I’ve just done the calculation.
On one side:
TOTAL RETURN (realised gains) + TOTAL DIVIDENDS + DEPOSITS + WITHDRAWALS (a negative figure) + STAMP DUTY
Apart from STAMP DUTY, which I had to sum myself, all these figures are found in HISTORY.
On the other side:
INVESTED + FREE FUNDS
For my account, the two figures were out by £0.01 (1p). I may have mistyped something but I often find slight discrepancies when I try to compare values that should match.
The RETURN figure (unrealised gains) doesn’t feature in this at all.
Hope this helps.