I base my price on hours spent in preparation, practice, and performance, plus a small amount for wear and tear on equipment.  Weddings are £12 more than the above as I will arrive earlier and as I will develop a version of your favourite song included in each booking.

London gigs <70 guests by public transport priced similarly, for >70 guests in London parking and congestion charge if applicable are extra.  Happy to provide a custom quote on request.