Much of my work involves exploring the way depict our movement in space and time, often at many different scales. These sketches explore how we might convey both the inherent individuality in our own movement while acknowledging that we also share common behaviours.

London hire bicycle 12248 was ridden by 2,286 people on 2,450 journeys before retiring to the Museum of London in January 2013. Its final nine months' travel create urban signatures that write themselves across London, visiting the parks, events and workplaces of the world city.

The continuous flow of the bicycle is occasionally punctuated by repairs or redistribution as it is carried across the city to where it is needed most.

Further explorations of the tensions between algorithmically imposed structure and freeform expression. These cube sketches make computer generated tessellations of a plane appear hand drawn. They implement a simple cube drawing algorithm rendered using the handy Processing library.

Can computers be taught to capture the human form? Experiments with spline curves and machine vision.

Does a computer have authority? Does the human hand provide purpose? These pebble sketches explore attempts to make computer generated tessellations of a plane appear hand drawn. They implement a simple circle packing algorithm rendered using the handy Processing library.

Maps are often concerned with boundaries. Bounded by buildings, by roads, by land ownership and political control. What would our cities become if we relaxed those boundaries?

Data from over 20 million journeys made with the London Cycle Hire Scheme ("Boris Bikes") are used to feed an animation of our bicycle movements across London. Our journeys are captured and rendered as smoothly flowing curves through the capital. The apparent chaos of so many journeys gradually clears as structures emerge that reflect our reasons to travel. Leisure cyclists exercise their way around the royal parks; commuters hurry to and from railway stations; weekenders embark on cultural excursions of museums and galleries.

A collection of data improvisations that explore how people, machines, time and place become the city they share. What does it mean to improvise with data? In a context of interactive visualization for the masses, who does the improvisation – the 'producer' or 'consumer'? Does improvised data generation, visualization, assembly and consumption affect the objective authority claimed by computing technologies and the use of big data? This work explores these questions by considering interpretations of improvisation in the context of data on movements of people and bicycles in the city of Chicago.

Data were mapped from the Chicago 'Divvy' public bicycle hire scheme for all journeys made in 2014. Over the year 2,454,634 trips between 300 docking stations were made on a total of 2,968 bicycles. New mappings of these data are explored in this exhibit through temporal and spatial juxtaposition and superposition prompting us to question who shapes the cities we live in, how we shape them and how we build our shared identities though movement and place. By viewing our movement not from the perspective of the individual, but from the viewpoint of the bicycle, we see the imprints we leave on our cities.

We make journeys with a purpose but the shared vehicles on which those journeys are made have none. As we move a bicycle from one station to the next, a larger, unplanned composition is created, sequencing a set of discrete yet connected movements to create an urban choreography. There is diurnal and seasonal polyrhythm to the composition, embellished with the illusory randomness of thousands of small stories.