100 Turkish lira is worth about £1.70–£1.90 at recent exchange rates, so a reasonable rough figure is around £1.80.

Because exchange rates move all the time, the exact value can change from day to day and even hour to hour. For a precise up‑to‑the‑minute figure, it’s best to plug “100 TRY to GBP” into a live currency converter from a bank or FX service before you exchange.