* Flows through Langeled around 5 mcm
* Day-ahead contract up 10 pct
LONDON, Sept 13 (Reuters) - Prompt British gas prices rose on Tuesday morning as imports from Norway through the Langeled pipeline fell.
Gas for day-ahead delivery rose 2.10 pence or 10 percent to 22.70 pence/therm at 1048 GMT.
Gas for immediate delivery was up 0.80 p to 22.40 p/therm.
Langeled is Britain's main subsea gas import route with a maximum capacity around 70 mcm/day.
Domestic gas production was also curbed due to planned maintenance at the Theddlethorpe terminal, scheduled to end on Sept. 16.
Flows from Theddlethorpe were below 1 mcm, the National Grid data showed.
Gas prices further out on the curve also edged higher.
The Winter 16 contract rose 0.50 pence to 38.15 p/therm, while the Q1 2017 contract was up 0.30 p at 40.30 p/therm.
In the Netherlands, the day-ahead gas price at the TTF hub was up 0.33 euro at 11.03 euros per megawatt-hour.