They're taking 30% of the total claim regardless of whether it goes to court or not. £4-5k was their estimate for the injuries.
So if I were to get the most favourable outcome at court, £5k, I'd get another approx £800. £4.5k and it'd be about £500 to me.
I did just read this:
Taking a cycling accident to the courts
On rare occasions the cycling accident claim will need to go to court. The document known as the “Particulars of Claim” will need to be completed which will contain full explanation of the basis of your claim and losses.
Even if court proceedings are issued, most cycling accident claims will still eventually settle before the need for a trial or hearing.
So it seems just the threat of committing to court action could prompt a higher offer and for them to settle before court.