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Consolidated Statements of Cash Flows - GBP (£) £ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities |  |  |
Loss for the year | £ (23,085) | £ (6,049) | £ (5,332)
Adjustments for: |  |  |
Income tax credit | (2,401) | (2,116) | (1,176)
Amortization and depreciation | 194 | 101 | 44
Finance income | (208) | (283) | (406)
Share-based payments | 11,731 | 1,132 | 785
Initial public offering (IPO) related expenses | 1,794 |  |
Net foreign exchange losses | 1,584 |  |
Cash flows from (used in) operations before changes in working capital | (10,391) | (7,215) | (6,085)
Movements in working capital: |  |  |
Decrease (increase) in prepayments, accrued income and other receivables | 458 | (3,404) | 36
Increase in trade payables | 392 | 220 | 133
Increase in payroll taxes, social security and accrued expenditure | 551 | 33 | 418
Movements in working capital | 1,401 | (3,151) | 587
Cash used in operations | (8,990) | (10,366) | (5,498)
Corporation tax | 282 | 1,102 | 1,031
Net cash used in operating activities | (8,708) | (9,264) | (4,467)
Cash flows from investing activities |  |  |
Interest received | 162 | 410 | 290
Payments for office and computer equipment | (370) | (15) | (6)
Payments for intangible assets | (725) | (539) | (390)
Proceeds from (investment in) short-term deposits |  | 15,075 | (75)
Net cash (used in) provided by investing activities | (933) | 14,931 | (181)
Cash flows from financing activities |  |  |
Proceeds from issue of share capital | 79,834 |  |
IPO related expenses from issue of share capital - included in share premium | (413) |  |
IPO related expenses included in statement of operations | (1,794) |  |
Proceeds from issue of share capital - exercise of share options | 120 | 200 |
Net cash from financing activities | 77,747 | 200 |
Net increase (decrease) in cash and cash equivalents | 68,106 | 5,867 | (4,648)
Cash and cash equivalents at beginning of year | 19,990 | 14,112 | 18,761
Foreign currency translation differences | (1,393) | 11 | (1)
Cash and cash equivalents at end of year | £ 86,703 | £ 19,990 | £ 14,112

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