| PLISS 25 |
 | 2025-03-10 | Travel (Flight, London to Bologna, British Airways) (L. Tratt) | £501.82 |
| 2025-03-10 | Travel (Flight, Milan to London, British Airways) (L. Tratt) | £274.89 |
| 2025-05-25 | Travel (Train, Bath to Heathrow (return)) (L. Tratt) | £114.90 |
| 2025-05-25 | Food (Pret a Manger, Heathrow) (L. Tratt) | £23.60 |
| 2025-05-25 | Travel (Wifi, British Airways) (L. Tratt) | £7.99 |
| 2025-05-25 | Travel (Train, Bologna Airport to Bologna) (L. Tratt) | £20.21 |
| 2025-05-25 | Travel (Train, Bologna to Forli) (L. Tratt) | £16.48 |
| 2025-05-25 | Travel (Taxi, Forli to Bertinoro) (L. Tratt) | £29.47 |
| 2025-05-31 | Travel (Train, Forli to Milan Centrale) (L. Tratt) | £54.69 |
| 2025-05-31 | Food (Vecchia Malga Negozi, Bologna Centrale) (L. Tratt) | £5.64 |
| 2025-05-31 | Travel (Malpensa Express) (L. Tratt) | £10.97 |
| 2025-05-31 | Food (Hudson News, Malpensa) (L. Tratt) | £5.13 |
| 2025-05-31 | Food (Comptoir Lebanese, Malpensa) (L. Tratt) | £35.15 |
| 2025-05-31 | Travel (Wifi, British Airways) (L. Tratt) | £6.99 |
| | Total: | £1107.93 |
| | Debit (reimbursed) LangEng::Travel | £1107.93 |
| Books |
| 2024-08-23 | SSA-based Compiler Design (L. Tratt) | £70.25 |
| | Total: | £70.25 |
| | Debit (reimbursed) LangEng::Travel | £70.25 |
| Research visitor |
| 2024-08-14 | Food (The Creamery, Castle Cary) (K. Jin, L. Tratt) | £80.00 |
| | Total: | £80.00 |
| | Debit (reimbursed) LangEng::Travel | £80.00 |
| Report meeting |
| 2024-07-09 | Food (Gail's, Exmouth Market) (J. Chen, A. Finkelstein, T. Radzik, L. Tratt) | £29.80 |
| | Total: | £29.80 |
| | Debit (reimbursed) LangEng::Travel | £29.80 |
| Research meeting |
| 2024-05-01 | Food (Beckford Canteen, Bath) (L. Tratt) | £40.00 |
| | Total: | £40.00 |
| | Debit (reimbursed) LangEng::Travel | £40.00 |
| Books |
| 2024-04-11 | The Programmer's Brain: What every programmer needs to know about cognition | £39.99 |
| 2024-04-11 | Geek Sublime: The Beauty of Code, the Code of Beauty | £16.00 |
| 2024-04-11 | The Philosophy of Software: Code and Mediation in the Digital Age | £44.99 |
| 2024-04-11 | Data and Reality: A Timeless Perspective on Perceiving and Managing Information in Our Imprecise World | £49.99 |
| 2024-04-11 | Semiotics of Programming | £32.99 |
| 2024-04-19 | Hackers and Painters: Big Ideas from the Computer Age (L. Tratt) | £36.65 |
| 2024-04-19 | Beyond Programming: To a New Era of Design (L. Tratt) | £27.45 |
| 2024-04-19 | Patterns of Software: Tales from the Software Community (L. Tratt) | £39.35 |
| 2024-04-19 | A Discipline of Programming (L. Tratt) | £40.48 |
| | Total: | £327.89 |
| | Debit (reimbursed) LangEng::Travel | £327.89 |
| Programming 2024 |
 | 2024-02-23 | Registration (J. Hughes) | £476.02 |
| 2024-02-23 | Travel (Flight, London Gatwick to Copenhagen, Norwegian) (J. Hughes) | £124.60 |
| 2024-03-11 | Travel (Train, Copenhagen Airport to Lund C) (J. Hughes) | £13.77 |
| 2024-03-11 | Travel (Uber, Lund C to Hotel) (J. Hughes) | £11.07 |
| 2024-03-11 | Accomodation (Accommodation) (J. Hughes) | £362.81 |
| 2024-03-11 | Food (The Herbivore [Lund]) (J. Hughes) | £14.95 |
| 2024-03-13 | Food (The Herbivore [Lund]) (J. Hughes) | £21.53 |
| 2024-03-14 | Travel (Train, Lund C to Copenhagen Airport) (J. Hughes) | £14.22 |
| | Total: | £1038.97 |
| | Debit (awaiting reimbursement) LangEng::Travel | £1038.97 |
| Research Visitor |
| 2023-09-26 | Food (Pret a Manger, Kingsway) (D. Edelsohn, A. Lascu, L. Tratt) | £30.49 |
| 2023-09-26 | Food (Roasting Plant Coffee, Strand) (D. Edelsohn, L. Tratt) | £7.35 |
| | Total: | £37.84 |
| | Debit (reimbursed) LangEng::Travel | £37.84 |
| PLISS 2023 |
| 2023-07-23 | Travel (Flight, Heathrow to Bologna, BA) (L. Tratt) | £410.68 |
| 2023-07-23 | Travel (Flight, Bologna to Luton, RyanAir) (L. Tratt) | £123.09 |
| 2023-09-03 | Food (Pret a Manger, Heathrow) (L. Tratt) | £17.18 |
| 2023-09-03 | Food (Starbucks, Heathrow) (L. Tratt) | £7.30 |
| 2023-09-03 | Travel (Train, Bologna Airport to Bologna Central) (L. Tratt) | £9.71 |
| 2023-09-03 | Travel (Train, Bologna Central to Forli) (L. Tratt) | £16.29 |
| 2023-09-03 | Travel (Taxi, Forli to Bertinoro) (L. Tratt) | £30.90 |
| 2023-09-07 | Travel (Luton Dart) (L. Tratt) | £4.90 |
| 2023-09-08 | Registration (L. Tratt) | £378.49 |
| 2023-09-09 | Travel (Train, Castle Cary to Heathrow) (L. Tratt) | £112.60 |
| 2023-09-09 | Travel (Taxi, Bertinoro to Bologna Airport) (L. Tratt) | £177.46 |
| 2023-09-09 | Travel (Train, Luton Airport Parkway to Paddington) (L. Tratt) | £20.00 |
| 2023-09-09 | Food (Pret a Manger, Paddington) (L. Tratt) | £19.35 |
| | Total: | £1327.95 |
| | Debit (reimbursed) LangEng::Travel | £985.98 |
| | Debit (reimbursed) CapableVMs::Travel | £341.97 |
| Research visitor |
| 2023-08-01 | Food (Pret a Manger, Strand) (E. Barrett, A. Lascu, L. Panayi, L. Tratt) | £39.99 |
| 2023-08-01 | Food (Roasting Plant Coffee, Strand) (E. Barrett, A. Lascu, L. Panayi, L. Tratt) | £26.75 |
| 2023-08-01 | Food (Watchhouse, Somerset House) (L. Panayi, L. Tratt) | £9.11 |
| 2023-08-01 | Food (Soho Coffee Co) (L. Panayi, I. Shree, E. Barrett) | £7.85 |
| | Total: | £83.70 |
| | Debit (reimbursed) LangEng::Travel | £83.70 |
| European LLVM developers' meeting 2023 |
| 2023-04-04 | Registration (E. Barrett) | £325.90 |
| 2023-04-04 | Accomodation (Premiere Inn Glasgow) (E. Barrett) | £281.97 |
| 2023-04-04 | Travel (Train, Canterbury West to Glasgow Central) (E. Barrett) | £141.59 |
| 2023-04-05 | Registration (A. Lascu) | £320.03 |
| 2023-04-05 | Accomodation (Premiere Inn Glasgow) (A. Lascu) | £220.50 |
| 2023-04-05 | Travel (Train, London Euston to Glasgow Central) (A. Lascu) | £97.09 |
| 2023-04-19 | Registration (L. Diekmann) | £404.81 |
| 2023-04-19 | Accomodation (Premiere Inn Glasgow) (L. Diekmann) | £279.97 |
| 2023-04-19 | Travel (Train, Chislehurst to Glasgow Central) (L. Diekmann) | £200.09 |
| 2023-05-04 | Travel (Taxi, London City Airport to Canterbury (due to train strike)) (E. Barrett) | £134.64 |
| 2023-05-04 | Travel (Flight, Glasgow to London Gatwick (train replacement)) (A. Lascu) | £77.99 |
| 2023-05-04 | Travel (Flight from Glasgow to London City Aiport for L.Diekmann and E.Barrett) (L. Diekmann) | £296.70 |
| 2023-05-09 | Food (WH Smith, Euston) (E. Barrett) | £4.34 |
| 2023-05-09 | Food (Non Viet, 536 Sauchiehall Street) (A. Lascu, E. Barrett, L. Diekmann, S. Kell, J. Yu) | £136.40 |
| 2023-05-09 | Food (Leon, Euston) (L. Diekmann) | £12.48 |
| 2023-05-09 | Food (WH Smith, Euston) (L. Diekmann) | £5.43 |
| 2023-05-10 | Food (Pret, 34 Sauchiehall Street) (A. Lascu) | £4.75 |
| 2023-05-11 | Food (Black Sheep Coffee, Glasgow) (E. Barrett, L. Diekmann, A. Lascu) | £11.27 |
| 2023-05-11 | Travel (Train, London Euston to Glasgow Central (return refund)) (A. Lascu) | £-60.10 |
| 2023-05-11 | Travel (Airport transfer, London Gatwick to Gloucester Road)) (A. Lascu) | £92.00 |
| 2023-05-11 | Food (Pret, 34 Sauchiehall Street) (A. Lascu) | £3.50 |
| 2023-05-11 | Food (Sano Pizza, 1146 Argyle Street) (A. Lascu, E. Barrett, L. Diekmann, S. Kell) | £68.75 |
| 2023-05-12 | Food (WH Smith, Glasgow Airport) (E. Barrett, L. Diekmann) | £9.36 |
| 2023-05-12 | Travel (Bus, Glasgow City to Airport) (E. Barrett) | £10.00 |
| 2023-05-12 | Food (Pret, Glasgow) (E. Barrett, L. Diekmann) | £20.80 |
| 2023-05-12 | Travel (Bus, Glasgow City to Airport) (A. Lascu) | £10.00 |
| 2023-05-12 | Food (Frankie & Benny's, Glasgow Airport) (A. Lascu) | £15.10 |
| 2023-05-12 | Travel (Bus, Glasgow City to Airport) (L. Diekmann) | £10.00 |
| 2023-05-12 | Travel (Taxi from London City Aiport to Chislehurst) (L. Diekmann) | £44.26 |
| 2023-05-15 | Postage of cancelled train tickets for refund (E. Barrett) | £2.25 |
| 2023-05-26 | Travel (Refunded cancelled train, Glasgow to Canterbury West) (E. Barrett) | £-84.00 |
| 2023-07-26 | Travel (Refunded cancelled train, Glasgow to Chislehurst) (L. Diekmann) | £-119.70 |
| | Total: | £2978.17 |
| | Debit (reimbursed) LangEng::Travel | £1992.16 |
| | Debit (reimbursed) CapableVMs::Travel | £986.01 |
| Research visitors |
| 2023-06-27 | Food (KCL Cafe, Bush House) (E. Barrett, L. Diekmann, J. Hughes, A. Lascu, U. Kayserilioglu, S. Krynski, L. Tratt) | £24.35 |
| 2023-06-27 | Food (KCL Cafe, Bush House) (E. Barrett, J. Hughes, U. Kayserilioglu, S. Krynski, L. Tratt) | £8.95 |
| 2023-06-27 | Food (Pret a Manger, Kingsway) (U. Kayserilioglu, S. Krynski, L. Tratt) | £15.35 |
| 2023-06-27 | Food (Opera Tavern, Catherine Street) (U. Kayserilioglu, L. Tratt) | £39.94 |
| | Total: | £88.59 |
| | Debit (reimbursed) LangEng::Travel | £88.59 |
| Team Building |
| 2023-05-03 | Food (Pizza Pilgrims, Garrick Street) (E. Barrett, L. Diekmann, J. Hughes, L. Tratt) | £77.51 |
| | Total: | £77.51 |
| | Debit (reimbursed) LangEng::Travel | £77.51 |
| Research visitor |
| 2023-04-25 | Food (KCL Cafe, Bush House) (F. Bour, L. Tratt) | £3.60 |
| 2023-04-25 | Food (Coco di Mama, Kingsway) (F. Bour, L. Tratt) | £16.00 |
| 2023-04-25 | Food (KCL Cafe, Bush House) (E. Barrett, L. Diekmann, J. Hughes, F. Bour, L. Tratt) | £13.00 |
| 2023-04-25 | Food (Sagar, Catherine Street) (E. Barrett, L. Diekmann, J. Hughes, F. Bour, L. Tratt) | £92.98 |
| | Total: | £125.58 |
| | Debit (reimbursed) LangEng::Travel | £125.58 |
| Replacement Laptop Charger |
| 2023-04-12 |
USB-C Charger for Lenovo Thinkpad X1 Carbon
(L. Diekmann) | £35.33 |
| | Total: | £35.33 |
| | Debit (reimbursed) LangEng::Travel | £35.33 |
| Research visitor |
| 2023-04-11 | Food (KCL Cafe, Bush House) (J. Noble, L. Tratt) | £4.20 |
| 2023-04-11 | Food (Pret a Manger, Kingsway) (J. Noble, L. Tratt) | £21.74 |
| 2023-04-11 | Food (Opera Tavern, Catherine Street) (J. Noble, L. Tratt) | £80.00 |
| 2023-04-11 | Food (Ole and Steen, Strand) (E. Barrett, L. Diekmann, J. Noble) | £13.50 |
| | Total: | £119.44 |
| | Debit (reimbursed) LangEng::Travel | £119.44 |
= not submitted, 
= accounted
